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Longer titles found: Paradox of radiation of charged particles in a gravitational field (view), Non-relativistic gravitational fields (view)

searching for Gravitational field 363 found (958 total)

alternate case: gravitational field

Anti-gravity (3,989 words) [view diff] exact match in snippet view article find links to article

Anti-gravity (also known as non-gravitational field) is a hypothetical phenomenon of creating a place or object that is free from the force of gravity

Gravitational constant (5,187 words) [view diff] exact match in snippet view article find links to article

called "Big G", distinct from "small g" (g), which is the local gravitational field of Earth (equivalent to the free-fall acceleration). Where M ⊕ {\displaystyle

Thermal equilibrium (2,335 words) [view diff] exact match in snippet view article find links to article

of material, left for a long time under the influence of a steady gravitational field, along its tall dimension, due to an outside body such as the earth

Vacuum solution (general relativity) (811 words) [view diff] exact match in snippet view article

which take into account the electromagnetic field in addition to the gravitational field. Vacuum solutions are also distinct from the lambdavacuum solutions

Introduction to general relativity (9,131 words) [view diff] exact match in snippet view article find links to article

observed in an accelerated reference frame should also be observed in a gravitational field of corresponding strength. This principle allowed Einstein to predict

Roy Kerr (1,337 words) [view diff] exact match in snippet view article find links to article

Einstein field equation of general relativity. His solution models the gravitational field outside an uncharged rotating massive object, including a rotating

Gravitational redshift (5,075 words) [view diff] exact match in snippet view article find links to article

the 1959 Pound–Rebka experiment. In a case such as this, where the gravitational field is uniform, the change in wavelength is given by z = Δ λ λ ≈ g Δ

Gravitation of the Moon (2,271 words) [view diff] exact match in snippet view article find links to article

will weigh only 16.6% (= 1/6) of what they weigh on the Earth. The gravitational field of the Moon has been measured by tracking the radio signals emitted

Semiclassical gravity (758 words) [view diff] exact match in snippet view article find links to article

which one treats matter and energy fields as being quantum and the gravitational field as being classical. In semiclassical gravity, matter is represented

Kilogram-force (796 words) [view diff] exact match in snippet view article find links to article

magnitude of the force exerted on one kilogram of mass in a 9.80665 m/s2 gravitational field (standard gravity, a conventional value approximating the average

Abell 2667 (264 words) [view diff] exact match in snippet view article find links to article

this cluster. This galaxy is being ripped apart by the cluster's gravitational field and harsh environment. The finding sheds light on the mysterious

Graviphoton (361 words) [view diff] exact match in snippet view article find links to article

particle which emerges as an excitation of the metric tensor (i.e. gravitational field) in spacetime dimensions higher than four, as described in Kaluza–Klein

Zero-energy universe (1,412 words) [view diff] exact match in snippet view article find links to article

universe model requires both a matter field with positive energy and a gravitational field with negative energy to exist. The hypothesis is broadly discussed

Hydrostatics (2,607 words) [view diff] exact match in snippet view article find links to article

in understanding plate tectonics and the anomalies of the Earth's gravitational field), to meteorology, to medicine (in the context of blood pressure)

Intrinsic and extrinsic properties (philosophy) (468 words) [view diff] exact match in snippet view article

extrinsic property that varies depending on the strength of the gravitational field in which the respective object is placed. The question of intrinsicality

Ronald Mallett (2,081 words) [view diff] exact match in snippet view article find links to article

matter and energy can create a gravitational field. This means that the energy of a light beam can produce a gravitational field. My current research considers

Gravitational time dilation (2,396 words) [view diff] exact match in snippet view article find links to article

object creating the gravitational field, r {\displaystyle r} is the radial coordinate of the observer within the gravitational field (this coordinate is

Weight (3,947 words) [view diff] exact match in snippet view article find links to article

accelerating elevator cannot be distinguished from a scale in a gravitational field. Gravitational force and weight thereby became essentially frame-dependent

Hole argument (2,591 words) [view diff] exact match in snippet view article find links to article

consider a gravitational source, such as the Sun. Then there is some gravitational field described by a metric g(r). Now perform a coordinate transformation

Van Stockum dust (2,068 words) [view diff] exact match in snippet view article find links to article

is an exact solution of the Einstein field equations in which the gravitational field is generated by dust rotating about an axis of cylindrical symmetry

Geocentric orbit (1,997 words) [view diff] exact match in snippet view article find links to article

atmosphere. The escape velocity required to pull free of Earth's gravitational field altogether and move into interplanetary space is about 11.2 km/s

HD 173416 b (277 words) [view diff] exact match in snippet view article find links to article

having twice the mass of the Sun, which increases the strength of its gravitational field. This evidence implies that when this star was on the main sequence

Einstein–Cartan theory (3,106 words) [view diff] exact match in snippet view article find links to article

(orbital plus intrinsic) angular momentum to the presence of the gravitational field. The theory was first proposed by Élie Cartan in 1922 and expounded

Scalar theories of gravitation (1,401 words) [view diff] exact match in snippet view article find links to article

theories of gravitation are field theories of gravitation in which the gravitational field is described using a scalar field, which is required to satisfy some

Eotvos (unit) (317 words) [view diff] exact match in snippet view article

Eötvös, who made pioneering studies of the gradient of the Earth's gravitational field. "Basic measurement units / GOCE / Earth Explorers / The Living Planet

Brans–Dicke theory (2,266 words) [view diff] exact match in snippet view article find links to article

equipped with a metric tensor, g a b {\displaystyle g_{ab}} , and the gravitational field is represented (in whole or in part) by the Riemann curvature tensor

Non-inertial reference frame (1,519 words) [view diff] exact match in snippet view article find links to article

frame-dependent gravitational field becomes less realistic. In these Machian models, the accelerated body can agree that the apparent gravitational field is associated

General relativity (22,670 words) [view diff] exact match in snippet view article find links to article

a gravitational field and the ball accelerating, or in free space aboard a rocket that is accelerating at a rate equal to that of the gravitational field

Line of sight (382 words) [view diff] exact match in snippet view article find links to article

lens or density changes in the traversed media, or deflected by a gravitational field. Fields of study feature specific targets, such as vessels in navigation

Outline of black holes (2,238 words) [view diff] exact match in snippet view article find links to article

Schwarzschild solution, named after Karl Schwarzschild, describes the gravitational field outside a spherical, uncharged, non-rotating mass such as a star

Schrödinger–Newton equation (3,508 words) [view diff] exact match in snippet view article find links to article

including a term that represents interaction of a particle with its own gravitational field. The inclusion of a self-interaction term represents a fundamental

Nonsymmetric gravitational theory (571 words) [view diff] exact match in snippet view article find links to article

the flat rotation curves of galaxies. In general relativity, the gravitational field is characterized by a symmetric rank-2 tensor, the metric tensor

Guiding center (2,000 words) [view diff] exact match in snippet view article find links to article

result in drifts. A simple example of a force drift is a plasma in a gravitational field, e.g. the ionosphere. The drift velocity is v g = m q g × B B 2 {\displaystyle

Geophysical survey (2,922 words) [view diff] exact match in snippet view article find links to article

any mass is affected by the gravitational field. The motion of planets is affected by the Sun's enormous gravitational field. Likewise, a heavier object

Space elevator (10,333 words) [view diff] exact match in snippet view article find links to article

objects attached to the cable is called the apparent gravitational field. The apparent gravitational field for attached objects is the (downward) gravity minus

Catenary (6,644 words) [view diff] exact match in snippet view article find links to article

under its own weight when supported only at its ends in a uniform gravitational field. The catenary curve has a U-like shape, superficially similar in

Galactic ridge (950 words) [view diff] exact match in snippet view article find links to article

material or substance from a so-called donor star falls into the strong gravitational field of a compact object, such as a neutron star or a black hole. This

Timeline of Galileo (spacecraft) (886 words) [view diff] exact match in snippet view article

radiation regions. A radio-science experiment analyzed Ganymede's gravitational field and internal structure. The instruments detected evidence of a self-generated

Galactic ridge (950 words) [view diff] exact match in snippet view article find links to article

material or substance from a so-called donor star falls into the strong gravitational field of a compact object, such as a neutron star or a black hole. This

World Geodetic System (2,809 words) [view diff] exact match in snippet view article find links to article

corrections to initial station coordinates and coefficients of the gravitational field. The largest collection of data ever used for WGS purposes was assembled

Line integral (3,071 words) [view diff] exact match in snippet view article find links to article

computes the work done on an object moving through an electric or gravitational field F along a path L {\displaystyle L} . In qualitative terms, a line

Normal force (1,453 words) [view diff] exact match in snippet view article find links to article

n = m g {\displaystyle F_{n}=mg} , where m is mass, and g is the gravitational field strength (about 9.81 m/s2 on Earth). The normal force here represents

Vertical and horizontal (2,135 words) [view diff] exact match in snippet view article find links to article

deflect the plumb bob away from the true zenith. On a larger scale the gravitational field of the Earth, which is at least approximately radial near the Earth

Equations for a falling body (1,386 words) [view diff] exact match in snippet view article find links to article

F = mg, where F is the force exerted on a mass m by the Earth’s gravitational field of strength g. Assuming constant g is reasonable for objects falling

Convection cell (884 words) [view diff] exact match in snippet view article find links to article

known as Rayleigh–Bénard convection. Convection usually requires a gravitational field, but in microgravity experiments, thermal convection has been observed

Longitude (4,148 words) [view diff] exact match in snippet view article find links to article

longitude because of vertical deflection, small variations in Earth's gravitational field (see astronomical latitude). The concept of longitude was first developed

Gravitational lens (5,719 words) [view diff] exact match in snippet view article find links to article

who remarked that it is "not permissible to say that the solar gravitational field acts like a lens, for it has no focal length". If the (light) source

Zhou Peiyuan (296 words) [view diff] case mismatch in snippet view article find links to article

California Institute of Technology under Eric Temple Bell with thesis The Gravitational Field of a Body with Rotational Symmetry in Einstein's Theory of Gravitation

Newtonian motivations for general relativity (2,611 words) [view diff] exact match in snippet view article find links to article

force is that all massive objects accelerate in the same manner in a gravitational field. This is often expressed as "The gravitational mass is equal to the

Temporary satellite (1,166 words) [view diff] exact match in snippet view article find links to article

temporary satellite is an object which has been captured by the gravitational field of a planet and thus has become the planet's natural satellite, but

Geophysical signal analysis (2,204 words) [view diff] exact match in snippet view article find links to article

extremely sensitive gravitometers and magnetometers respectively. The gravitational field changes are measured using devices such as atom interferometers.

Larmor precession (1,255 words) [view diff] exact match in snippet view article find links to article

precession of a tilted classical gyroscope in an external torque-exerting gravitational field. Objects with a magnetic moment also have angular momentum and effective

History of general relativity (4,499 words) [view diff] exact match in snippet view article find links to article

box not in a gravitational field, and noted that it would be indistinguishable from a box sitting still in an unchanging gravitational field. He used special

Potential energy (6,006 words) [view diff] exact match in snippet view article find links to article

{\displaystyle U_{g}=mgh,} where m is the mass in kilograms, g is the local gravitational field (9.8 metres per second squared on Earth), h is the height above a

Trajectory (1,995 words) [view diff] exact match in snippet view article find links to article

was the derivation of Kepler's laws of planetary motion. In the gravitational field of a point mass or a spherically-symmetrical extended mass (such

Clairaut's theorem (gravity) (1,767 words) [view diff] exact match in snippet view article

rotating ellipsoid in hydrostatic equilibrium under the action of its gravitational field and centrifugal force. It was published in 1743 by Alexis Claude

Tidal tensor (1,204 words) [view diff] exact match in snippet view article find links to article

particles, tidal stresses in a small object immersed in an ambient gravitational field. The tidal tensor represents the relative acceleration due to gravity

Kerr–Newman metric (4,719 words) [view diff] exact match in snippet view article find links to article

include any electric charges other than that associated with the gravitational field, and are thus termed vacuum solutions. This solution has not been

Xallarap (454 words) [view diff] exact match in snippet view article find links to article

intermediate object form a straight line as seen from Earth. Then the gravitational field of the intermediate object bends the light from distant object, magnifying

Graviton (comics) (3,381 words) [view diff] exact match in snippet view article

separating himself from Earth's gravitational field and instead attuning himself to the incredibly stronger gravitational field of the Sun, he was able to

Dust solution (749 words) [view diff] exact match in snippet view article find links to article

type of exact solution of the Einstein field equation, in which the gravitational field is produced entirely by the mass, momentum, and stress density of

Drop (unit) (722 words) [view diff] exact match in snippet view article

device and technique used to produce the drop, on the strength of the gravitational field, and on the viscosity, density, and the surface tension of the liquid

Nordtvedt effect (575 words) [view diff] exact match in snippet view article find links to article

equivalence principle, which indicates that an object's movement in a gravitational field does not depend on its mass or composition. No evidence of the effect

Theory of relativity (2,956 words) [view diff] exact match in snippet view article find links to article

under which the states of accelerated motion and being at rest in a gravitational field (for example, when standing on the surface of the Earth) are physically

Mass in general relativity (3,107 words) [view diff] exact match in snippet view article find links to article

reason for this subtlety is that the energy and momentum in the gravitational field cannot be unambiguously localized. (See Chapter 20 of .) So, rigorous

Fundamental interaction (4,918 words) [view diff] exact match in snippet view article find links to article

(GUT). An even bigger challenge is to find a way to quantize the gravitational field, resulting in a theory of quantum gravity (QG) which would unite

Gravitational interaction of antimatter (2,728 words) [view diff] exact match in snippet view article find links to article

therefore matter and antimatter would be accelerated identically by a gravitational field. From this point of view, matter-antimatter gravitational repulsion

Electron cyclotron resonance (1,079 words) [view diff] exact match in snippet view article find links to article

perpendicular to the field (e.g., in the presence of an electrical or gravitational field) resulting in a cycloid. The angular frequency (ω = 2πf ) of this

Mason–Weaver equation (1,860 words) [view diff] exact match in snippet view article find links to article

diffusion of solutes under a uniform force, usually a gravitational field. Assuming that the gravitational field is aligned in the z direction (Fig. 1), the Mason–Weaver

Predictive power (623 words) [view diff] exact match in snippet view article find links to article

relativity that the path of light would bend in the presence of a strong gravitational field. This was experimentally verified by an expedition to Sobral in Brazil

Schwarzschild radius (2,202 words) [view diff] exact match in snippet view article find links to article

obtained the exact solution to Einstein's field equations for the gravitational field outside a non-rotating, spherically symmetric body with mass M {\displaystyle

Atomic fountain (423 words) [view diff] exact match in snippet view article find links to article

fountain is a cloud of atoms that is tossed upwards in the Earth's gravitational field by lasers. If it were visible, it would resemble the water in a fountain

Einstein's thought experiments (14,108 words) [view diff] exact match in snippet view article find links to article

life in the following form: In an example worth considering, the gravitational field has a relative existence only in a manner similar to the electric

Aichelburg–Sexl ultraboost (427 words) [view diff] exact match in snippet view article find links to article

The original motivation behind the ultraboost was to consider the gravitational field of massless point particles within general relativity. It can be

Jordan and Einstein frames (1,103 words) [view diff] exact match in snippet view article find links to article

which are field variables that stress different aspects of the gravitational field equations and the evolution equations of the matter fields. In the

Bimetric gravity (3,356 words) [view diff] exact match in snippet view article find links to article

{\displaystyle g_{ij}} , describes the geometry of space-time and thus the gravitational field. The second metric tensor, γ i j {\displaystyle \gamma _{ij}} , refers

Gravity (7,367 words) [view diff] exact match in snippet view article find links to article

supported the idea that time runs more slowly in the presence of a gravitational field. The time delay of light passing close to a massive object was first

Metric (339 words) [view diff] exact match in snippet view article find links to article

fundamental object of study in general relativity, similar to the gravitational field in Newtonian physics Senses related to measurement: Metric system

Intervertebral disc damage and spaceflight (1,909 words) [view diff] exact match in snippet view article find links to article

scenarios experienced during exploration missions (re-entry to a gravitational field and activities on planetary surfaces). To date, flight data related

James E. Faller (353 words) [view diff] exact match in snippet view article find links to article

Gravimeter, which is sensitive enough to detect changes in the local gravitational field due to a person's mass. His work was featured in many books and magazines

Reissner–Nordström metric (4,265 words) [view diff] exact match in snippet view article find links to article

to the Einstein–Maxwell field equations, which corresponds to the gravitational field of a charged, non-rotating, spherically symmetric body of mass M

Fluid solution (1,908 words) [view diff] exact match in snippet view article find links to article

is an exact solution of the Einstein field equation in which the gravitational field is produced entirely by the mass, momentum, and stress density of

Non-exact solutions in general relativity (188 words) [view diff] exact match in snippet view article find links to article

approximately. These solutions are typically found by treating the gravitational field, g{\displaystyle g}, as a background space-time, γ{\displaystyle

Space rendezvous (3,698 words) [view diff] exact match in snippet view article find links to article

be used for spacecraft "landing" on natural objects with a weak gravitational field, e.g. landing on one of the Martian moons would require the same

Sergei Kopeikin (1,708 words) [view diff] exact match in snippet view article find links to article

confirming the Einstein's prediction on the relativistic nature of gravitational field and its finite speed of propagation. He is also involved in studies

Isostasy (2,874 words) [view diff] exact match in snippet view article find links to article

It was later found that the difference between the measured local gravitational field and what was expected for the altitude and local terrain (the Bouguer

Gravitational microlensing (7,045 words) [view diff] exact match in snippet view article find links to article

massive compact foreground object, the bending of light due to its gravitational field, as discussed by Albert Einstein in 1915, leads to two distorted

Shell collapsar (424 words) [view diff] exact match in snippet view article find links to article

limit of 0.7 M☉. A shell collapsar is void inside apart from intense gravitational field energy there. According to Newton's shell theorem, the acceleration

Enrique Loedel Palumbo (913 words) [view diff] exact match in snippet view article find links to article

a conversation about the differential equation of a point-source gravitational field, which resulted in a paper published by Loedel in Physikalische Zeitschrift

Bel–Robinson tensor (357 words) [view diff] exact match in snippet view article find links to article

relativity, there is no unique definition of the local energy of the gravitational field. The Bel–Robinson tensor is a possible definition for local energy

Juno (spacecraft) (9,174 words) [view diff] exact match in snippet view article

atmosphere. Juno's mission is to measure Jupiter's composition, gravitational field, magnetic field, and polar magnetosphere. It will also search for

Micro black hole (3,028 words) [view diff] exact match in snippet view article find links to article

theory. Torsion modifies the Dirac equation in the presence of the gravitational field and causes fermion particles to be spatially extended. In this case

Andrew Claude de la Cherois Crommelin (886 words) [view diff] exact match in snippet view article find links to article

Brazil, and measured the amount of deflection of light caused by the gravitational field of the Sun. The results from these observations were crucial in providing

Eddington (spacecraft) (532 words) [view diff] case mismatch in snippet view article

(1920). "A Determination of the Deflection of Light by the Sun's Gravitational Field, from Observations Made at the Solar eclipse of May 29, 1919". Phil

Euclidean geometry (7,077 words) [view diff] exact match in snippet view article find links to article

for it only over short distances (relative to the strength of the gravitational field). Euclidean geometry is an example of synthetic geometry, in that

Reactionless drive (1,282 words) [view diff] exact match in snippet view article find links to article

the expense of the momentum of the planet it orbits, through the gravitational field, or beam-powered propulsion and solar sailing, using the radiation

Negative mass (3,661 words) [view diff] exact match in snippet view article find links to article

produces a gravitational field that other masses respond to "passive" gravitational mass – the mass that responds to an external gravitational field by accelerating

Nordström's theory of gravitation (6,686 words) [view diff] exact match in snippet view article find links to article

augmented by an equation of motion for a test particle in an ambient gravitational field, which we can derive from Newton's force law and which states that

Thermodynamic equilibrium (7,632 words) [view diff] exact match in snippet view article find links to article

example, in a system in thermodynamic equilibrium in a vertical gravitational field, the pressure on the top wall is less than that on the bottom wall

Andrew Long (718 words) [view diff] exact match in snippet view article find links to article

application of satellite altimetry technology to the mapping of the marine gravitational field in the early 1990s, the application of modelling methods to 3D seismic

Bonnor beam (496 words) [view diff] exact match in snippet view article find links to article

fields inside the beam, a vacuum exterior region, which models the gravitational field outside the beam. On the "cylinder" where they meet, the two regions

Escape velocity (3,642 words) [view diff] exact match in snippet view article find links to article

mass m {\displaystyle m} the energy required to escape the Earth's gravitational field is GMm / r, a function of the object's mass (where r is radius of

Gravity current (2,191 words) [view diff] exact match in snippet view article find links to article

gravity current or density current is a primarily horizontal flow in a gravitational field that is driven by a density difference in a fluid or fluids and is

Equatorial bulge (1,785 words) [view diff] exact match in snippet view article find links to article

decreasing effect is strongest on the Equator. The fact that the Earth's gravitational field slightly deviates from being spherically symmetrical also affects

Mars Observer (2,306 words) [view diff] exact match in snippet view article find links to article

character of the surface material. Define globally the topography and gravitational field. Establish the nature of the Martian magnetic field. Determine the

Leonard Parker (250 words) [view diff] exact match in snippet view article find links to article

Bogoliubov transformations to quantum field theory with a changing gravitational field, he discovered the physical mechanism now known as cosmological particle

Entropic gravity (3,157 words) [view diff] exact match in snippet view article find links to article

this weak. It is also 3,000 times less than the remnant of Earth's gravitational field that exists at the point where Voyager 1 crossed the solar system's

AEgIS experiment (938 words) [view diff] exact match in snippet view article find links to article

CERN. Its primary goal is to measure directly the effect of Earth's gravitational field on antihydrogen atoms with significant precision. Indirect bounds

Simple harmonic motion (2,218 words) [view diff] exact match in snippet view article find links to article

rotation to centre of mass of object undergoing SHM and g being gravitational field constant. This is analogous to the mass-spring system. In the small-angle

Timeline of gravitational physics and relativity (13,589 words) [view diff] exact match in snippet view article find links to article

observing the relative motion of the Earth and Moon in the Sun's gravitational field. 1969 – William B. Bonnor introduces the Bonnor beam. 1969 – Joseph

Artificial gravity (4,908 words) [view diff] exact match in snippet view article find links to article

necessary to produce a useful centripetal force comparable to the gravitational field strength on Earth (g). Scientists are concerned about the effect

GEOS-3 (643 words) [view diff] exact match in snippet view article find links to article

mission was designed to further an understanding of the earth's gravitational field, size and shape of the terrestrial geoid, deep ocean tides, sea state

Projectile motion (5,351 words) [view diff] exact match in snippet view article find links to article

experienced by an object or particle (a projectile) that is projected in a gravitational field, such as from Earth's surface, and moves along a curved path under

Bondi–Metzner–Sachs group (1,613 words) [view diff] exact match in snippet view article find links to article

spacetime seen by observers located far away from all sources of the gravitational field, might be to extend and reproduce the symmetries of flat spacetime

Rayleigh–Taylor instability (4,049 words) [view diff] exact match in snippet view article find links to article

energy, as the denser material moves down under the (effective) gravitational field, and the less dense material is further displaced upwards. This was

Orbital velocity (82 words) [view diff] exact match in snippet view article find links to article

orbital angular velocity The orbital speed of a revolving body in a gravitational field. The velocity of particles due to wave motion, such as those in wind

Gravitational-wave astronomy (4,691 words) [view diff] exact match in snippet view article find links to article

gravitational radiation involves fluctuations of the relatively weaker gravitational field. The existence of gravitational waves was first suggested by Oliver

Geodesy (4,184 words) [view diff] exact match in snippet view article find links to article

understanding Earth's geometric shape, orientation in space, and gravitational field; however, geodetic science and operations are applied to other astronomical

Admittance (geophysics) (342 words) [view diff] exact match in snippet view article

takes atmospheric pressure as the input and measures changes in the gravitational field as the output. In such case admittance is measured in μGal/mbar.

Vainshtein radius (190 words) [view diff] exact match in snippet view article find links to article

l_{\text{P}}} and Planck mass m P {\displaystyle m_{\text{P}}} the gravitational field around a body of mass M {\displaystyle M} is the same in a theory

Earth (18,067 words) [view diff] exact match in snippet view article find links to article

structure cause local and broad regional differences in Earth's gravitational field, known as gravity anomalies. The main part of Earth's magnetic field

Solar eclipse of May 29, 1919 (1,719 words) [view diff] exact match in snippet view article find links to article

(1920) 'A determination of the deflection of light by the Sun's gravitational field'". Phil. Trans. R. Soc. A. 373 (2039): 20140287. Bibcode:2015RSPTA

Karl Schwarzschild (3,050 words) [view diff] case mismatch in snippet view article find links to article

the Gravitational Field of a Point-Mass, According to Einstein's Theory, The Abraham Zelmanov Journal, 2008, Volume 1, P. 10-19 On the Gravitational Field

Mass in special relativity (6,288 words) [view diff] exact match in snippet view article find links to article

have zero rest mass but contribute to the inertia (and weight in a gravitational field) of any system containing them. The concept is generalized in mass

OGLE-2005-BLG-390Lb (1,323 words) [view diff] exact match in snippet view article find links to article

occurs when light from a distant star is bent and magnified by the gravitational field of a foreground star. A gravitational microlensing event occurs when

Brachistochrone curve (6,015 words) [view diff] exact match in snippet view article find links to article

which a bead slides frictionlessly under the influence of a uniform gravitational field to a given end point in the shortest time. The problem was posed

Fermat's and energy variation principles in field theory (2,218 words) [view diff] exact match in snippet view article find links to article

energy of the system that combines the light-like particle and the gravitational field. Standard variational procedure according to Hamilton's principle

Theoretical gravity (3,502 words) [view diff] exact match in snippet view article find links to article

of the Earth. On the rotating sphere, the sum of the force of the gravitational field and the centrifugal force yields an angular deviation of approximately

Ricci-flat manifold (1,867 words) [view diff] exact match in snippet view article find links to article

ISBN 0-19-850601-5. MR 1787733. Zbl 1027.53052. Kerr, Roy P. (1963). "Gravitational field of a spinning mass as an example of algebraically special metrics"

Hungaria asteroids (888 words) [view diff] exact match in snippet view article find links to article

unlike those outside the 4:1 Kirkwood gap, strongly influenced by the gravitational field of Mars. Here, instead of Jupiter's influence, perturbations by Mars

Outline of energy (2,252 words) [view diff] exact match in snippet view article find links to article

force Gravitational energy – potential energy associated with a gravitational field. Nuclear potential energy Radiant energy – (≥0), energy of electromagnetic

Anti-symmetric operator (1,752 words) [view diff] exact match in snippet view article find links to article

graviton field is the quantized gravitational field. There is yet to be a theory that quantizes the gravitational field, but theories such as string theory

Twin paradox (7,923 words) [view diff] exact match in snippet view article find links to article

objects are in a gravitational field insofar as relativity is concerned. For the traveling twin at turnaround, this gravitational field fills the universe

Paul Dirac (8,845 words) [view diff] exact match in snippet view article find links to article

(see also Searches for magnetic monopoles). Dirac quantised the gravitational field. His work laid the foundations for canonical quantum gravity. In

Outline of energy (2,252 words) [view diff] exact match in snippet view article find links to article

force Gravitational energy – potential energy associated with a gravitational field. Nuclear potential energy Radiant energy – (≥0), energy of electromagnetic

Anatoly Logunov (1,405 words) [view diff] exact match in snippet view article find links to article

including the gravitational field itself. This approach permits constructing, in a unique and unambiguous manner, the theory of gravitational field as a gauge

SPT0615-JD (455 words) [view diff] exact match in snippet view article find links to article

Hubble's detection capabilities. As a consequence of the effect of a gravitational field of a galaxy cluster of an extremely large size, SPT-CL J0615-5746

Twin paradox (7,923 words) [view diff] exact match in snippet view article find links to article

objects are in a gravitational field insofar as relativity is concerned. For the traveling twin at turnaround, this gravitational field fills the universe

FOCAL (spacecraft) (642 words) [view diff] case mismatch in snippet view article

(1936). "Lens-Like Action of a Star by the Deviation of Light in the Gravitational Field". Science. 84 (2188): 506–507. Bibcode:1936Sci....84..506E. doi:10

Geometrodynamics (1,707 words) [view diff] no match in snippet view article find links to article

spacetime and held together by the gravitational attraction of the (gravitational) field energy of the wave itself. Wheeler was intrigued by the possibility

Light-dragging effects (615 words) [view diff] exact match in snippet view article find links to article

interaction with the object's gravitational field should allow "momentum exchange" too. Consequently, a moving gravitational field drags light and matter. This

Normalhöhennull (569 words) [view diff] exact match in snippet view article find links to article

NHN was introduced because for heights above Normalnull the actual gravitational field of the Earth was not taken into account. As a result, there were

Mass concentration (astronomy) (1,700 words) [view diff] exact match in snippet view article

that the lunar gravitational field caused larger than expected perturbations, presumably due to "roughness" of the lunar gravitational field. The Lunar mascons

List of scientific publications by Albert Einstein (4,126 words) [view diff] exact match in snippet view article find links to article

collaboration with Marcel Grossmann, in which the single Newtonian scalar gravitational field is replaced by ten fields, which are the components of a symmetric

Oberth effect (1,947 words) [view diff] exact match in snippet view article find links to article

v^{2},} which is larger than the energy from a burn outside the gravitational field ( 1 2 Δ v 2 {\displaystyle {\tfrac {1}{2}}\Delta v^{2}} ) by Δ v

Ehrenfest paradox (3,279 words) [view diff] exact match in snippet view article find links to article

there is a gravitational field (field of centrifugal force, and force of Coriolis). We therefore arrive at the result: the gravitational field influences

Shapiro time delay (1,684 words) [view diff] exact match in snippet view article find links to article

many times since then, with increasing accuracy. In a nearly static gravitational field of moderate strength (say, of stars and planets, but not one of a

Talal Asad (4,080 words) [view diff] exact match in snippet view article find links to article

home discipline of anthropology. As Donovan Schaefer writes: The gravitational field of Asad’s influence has emanated far from his home discipline and

Wormhole (6,824 words) [view diff] exact match in snippet view article find links to article

its gravitational field, and n, which determines the curvature of its spatial cross sections. When m is set equal to 0, the drainhole's gravitational field

Relativistic Doppler effect (6,041 words) [view diff] exact match in snippet view article find links to article

Doppler shifts; gravitational redshifts (due to light exiting a gravitational field); and cosmological expansion (where space itself stretches). This

Interplanetary Flight: An Introduction to Astronautics (191 words) [view diff] case mismatch in snippet view article find links to article

Earth. The book includes ten chapters: Historical Survey The Earth's Gravitational Field The Rocket The Problem of Escape by Rocket The Earth-Moon Journey

John A. O'Keefe (astronomer) (1,141 words) [view diff] exact match in snippet view article

Earth had a significant third degree zonal spherical harmonic in its gravitational field using U.S. Vanguard 1 satellite data collected in the late 1950s

Moon (24,434 words) [view diff] exact match in snippet view article find links to article

about a sixth of Earth's. The Moon's gravitational field is not uniform. The details of the gravitational field have been measured through tracking the

Solutions of the Einstein field equations (1,246 words) [view diff] exact match in snippet view article find links to article

trajectories of moving particles), which in turn depends on the gravitational field. If one is only interested in the weak field limit of the theory

Luna 14 (292 words) [view diff] exact match in snippet view article find links to article

studies of the interaction of the Earth and lunar masses, the lunar gravitational field, the propagation and stability of radio communications to the spacecraft

Locomotion in space (4,773 words) [view diff] exact match in snippet view article find links to article

Locomotion in these conditions is different from locomotion in a gravitational field. There are many factors that contribute to these differences, and

Muzzle velocity (1,451 words) [view diff] exact match in snippet view article find links to article

fired from such a gun on the surface of the body would leave its gravitational field; however, no arms are known with muzzle velocities that can overcome

Vapor (765 words) [view diff] exact match in snippet view article find links to article

pressure of the gas. Also, vapors obey the barometric formula in a gravitational field, just as conventional atmospheric gases do. Look up vapor or vapour

Ravit Helled (1,424 words) [view diff] exact match in snippet view article find links to article

based on calculating the speed of rotation by measuring Saturn's gravitational field and calculating its density and oblateness (the fact that its polar

Energy (7,454 words) [view diff] exact match in snippet view article find links to article

release energy that has been stored as potential energy in the Earth's gravitational field or elastic strain (mechanical potential energy) in rocks. Prior to

Horace Clifford Levinson (691 words) [view diff] exact match in snippet view article find links to article

pure mathematics from the University of Chicago with thesis The gravitational field of masses relatively at rest according to Einstein's theory of gravitation

Angry Birds Space (1,229 words) [view diff] exact match in snippet view article find links to article

comprising several different planets, each of which has its own gravitational field that affects the trajectory of the birds after launch. There is an

William B. Bonnor (683 words) [view diff] exact match in snippet view article find links to article

period he published a paper on the Bonnor Beam which models the gravitational field of a beam of light. Bonnor held visiting appointments at the Universities

Geopotential (1,379 words) [view diff] exact match in snippet view article find links to article

{\displaystyle W=V+\Phi \,} where V {\displaystyle V} is the potential of the gravitational field, W {\displaystyle W} that of the gravity field, and Φ {\displaystyle

Theoretical astronomy (3,866 words) [view diff] exact match in snippet view article find links to article

microcanonical functional integral for the gravitational field. The boundary data the gravitational field as described with a microcanonical system in

Asymptotic safety in quantum gravity (5,913 words) [view diff] exact match in snippet view article find links to article

aims at finding a consistent and predictive quantum theory of the gravitational field. Its key ingredient is a nontrivial fixed point of the theory's renormalization

Martin Tajmar (657 words) [view diff] exact match in snippet view article find links to article

application for a "Process for the generation of a gravitational field and a gravitational field generator." In June 2008, Tajmar reported a new phenomenon

Point source (disambiguation) (85 words) [view diff] exact match in snippet view article

pollution with a localized source Point mass, a point source of gravitational field This disambiguation page lists articles associated with the title

Second (3,648 words) [view diff] exact match in snippet view article find links to article

sufficiently small to allow the effects of the non-uniformity of the gravitational field to be neglected when compared to the uncertainties of the realization

Lunar Orbiter 5 (401 words) [view diff] exact match in snippet view article find links to article

Caesium Iodide Dosimeters : Radiation environment en route to and near the Moon Selenodesy : Gravitational field and physical properties of the Moon

Tide (13,054 words) [view diff] exact match in snippet view article find links to article

limited to the oceans, but can occur in other systems whenever a gravitational field that varies in time and space is present. For example, the shape

Outline of Earth sciences (2,704 words) [view diff] exact match in snippet view article find links to article

– The science of the geometric shape, orientation in space, and gravitational field of the Earth Geomagnetics – Study of the Earth's magnetic field Geomicrobiology

Stellar dynamics (15,411 words) [view diff] exact match in snippet view article find links to article

bodies. Also each star contributes more or less equally to the total gravitational field, whereas in celestial mechanics the pull of a massive body dominates

Astronomical unit (5,375 words) [view diff] exact match in snippet view article find links to article

0167103335 au) and, when Earth is closer to the Sun (perihelion), the Sun's gravitational field is stronger and Earth is moving faster along its orbital path. As

Pound (force) (1,182 words) [view diff] exact match in snippet view article

80665 m/s2). The standard values of acceleration of the standard gravitational field (gn) and the international avoirdupois pound (lb) result in a pound-force

Scientific theory (6,865 words) [view diff] exact match in snippet view article find links to article

distance—Einstein presumed a gravitational field. In 1907, Einstein's equivalence principle implied that a free fall within a uniform gravitational field is equivalent

Modified Newtonian dynamics (9,425 words) [view diff] exact match in snippet view article find links to article

extremely small accelerations (for instance, far from any sources of gravitational field). Such low accelerations are characteristic of the outer regions

Noncommutative standard model (1,836 words) [view diff] exact match in snippet view article find links to article

Connes-Lott model . The Connes-Lott model did not incorporate the gravitational field. In 1997, Ali Chamseddine and Alain Connes published a new action

Lunar Orbiter 4 (533 words) [view diff] exact match in snippet view article find links to article

environment Caesium Iodide Dosimeters: Radiation environment en route to and near the Moon Selenodesy: Gravitational field and physical properties of the Moon

Eddington experiment (4,870 words) [view diff] case mismatch in snippet view article find links to article

(1920). "A Determination of the Deflection of Light by the Sun's Gravitational Field, from Observations Made at the Total Eclipse of May 29, 1919". Philosophical

Gravity gradiometry (1,370 words) [view diff] exact match in snippet view article find links to article

masses are equivalent Gravimetry – Measurement of the strength of a gravitational field Instrumentation – Measuring instruments which monitor and control

Lunar Orbiter 2 (481 words) [view diff] exact match in snippet view article find links to article

environment Caesium Iodide Dosimeters Radiation environment en route to and near the Moon Selenodesy Gravitational field and physical properties of the Moon

Lunar Orbiter 3 (440 words) [view diff] exact match in snippet view article find links to article

Caesium Iodide Dosimeters : Radiation environment en route to and near the Moon Selenodesy : Gravitational field and physical properties of the Moon

Einstein radius (1,039 words) [view diff] case mismatch in snippet view article find links to article

(1936). "Lens-like Action of a Star by the Deviation of Light in the Gravitational Field" (PDF). Science. 84 (2188): 506–507. Bibcode:1936Sci....84..506E

Ricci decomposition (1,849 words) [view diff] exact match in snippet view article find links to article

tensor—or equivalently, the Einstein tensor—represents that part of the gravitational field which is due to the immediate presence of nongravitational energy

Cantilever magnetometry (950 words) [view diff] exact match in snippet view article find links to article

the mass on the end of the pendulum interacts with the external gravitational field, much as a magnetic moment interacts with an external magnetic field

Imre Izsák (1,050 words) [view diff] exact match in snippet view article find links to article

approximation in his computations, i.e. he reconstructed the Earth's gravitational field from monopoles, dipoles, quadrupoles, etc. The shape indicated by

Luna 19 (371 words) [view diff] exact match in snippet view article find links to article

included extensive studies on the shape and strength of the lunar gravitational field and the locations of the mascons. Occultation experiments in May

Latitude (6,180 words) [view diff] exact match in snippet view article find links to article

precise measurement of latitude requires an understanding of the gravitational field of the Earth, either to set up theodolites or to determine GPS satellite

Historical definitions of the SI base units (760 words) [view diff] exact match in snippet view article find links to article

force exerted on a body by a gravitational field, and hence its weight depends on the strength of the gravitational field. Weight of a 1 kg mass at the

The Wind from the Sun (659 words) [view diff] exact match in snippet view article find links to article

an Earth battleship got destroyed when it passed too close to the gravitational field of a neutron star. "Transit of Earth" The last surviving astronaut

Metre per second squared (447 words) [view diff] exact match in snippet view article find links to article

equivalent to newton per kilogram, N·kg−1, or N/kg. Thus, the Earth's gravitational field (near ground level) can be quoted as 9.8 metres per second squared

Gravitometer (61 words) [view diff] exact match in snippet view article find links to article

may refer to: Gravimeter, an instrument for measuring the local gravitational field Hydrometer, referred to in pipeline work as a gravitometer This disambiguation

Gamma-ray burst progenitors (2,862 words) [view diff] exact match in snippet view article find links to article

interest are mechanisms for producing non-thermal radiation by the gravitational field of rotating black holes, in the process of spin-down against their

Neutron star (11,799 words) [view diff] exact match in snippet view article find links to article

The gravitational field at a neutron star's surface is about 2×1011 times stronger than on Earth, at around 2.0×1012 m/s2. Such a strong gravitational field

Eric Poisson (470 words) [view diff] exact match in snippet view article find links to article

gravitational self-force, which is the force on a body moving through a gravitational field arising from the mass and energy of the body itself. This self-force

Lunar Orbiter 1 (692 words) [view diff] exact match in snippet view article find links to article

environment Caesium Iodide Dosimeters Radiation environment en route to and near the Moon Selenodesy Gravitational field and physical properties of the Moon

Polarizable vacuum (1,495 words) [view diff] exact match in snippet view article find links to article

of rulers made of ordinary matter, so that in the presence of a gravitational field the spacetime metric of Minkowski spacetime is replaced by

38th parallel structures (522 words) [view diff] exact match in snippet view article find links to article

occurring on Earth is vanishingly small because the Earth's weaker gravitational field is much less able than Jupiter's to pull a speeding object close

Characteristic energy (679 words) [view diff] exact match in snippet view article find links to article

2}}{\text{ km/s}}=3.5{\text{ km/s}}} . However, since the Sun's gravitational field is much stronger than Earth's, the two-body solution is insufficient

Mathematical physics (5,146 words) [view diff] exact match in snippet view article find links to article

gravitational force—an instant action at a distance—with a gravitational field. The gravitational field is Minkowski spacetime itself, the 4D topology of Einstein

Friedrich Kottler (869 words) [view diff] exact match in snippet view article find links to article

constant"), as well as the Kottler-Whittaker metric for a homogeneous gravitational field in flat spacetime. In (1922a, 1922b) he argued that one can formulate

Carbon detonation (1,169 words) [view diff] exact match in snippet view article find links to article

and dense. This results in a density stratification inverse to the gravitational field of the star, which is therefore unstable. Thus, blobs of burning

Scalar field (1,111 words) [view diff] exact match in snippet view article find links to article

scalar theories of gravitation scalar fields are used to describe the gravitational field. Scalar–tensor theories represent the gravitational interaction through

Conservative vector field (3,525 words) [view diff] exact match in snippet view article find links to article

same amount of gravitational potential energy. This is because a gravitational field is conservative. M. C. Escher's lithograph print Ascending and Descending

Pascal's law (1,415 words) [view diff] exact match in snippet view article find links to article

energy per unit volume of the liquid due to the existence of the gravitational field.[further explanation needed] Note that the variation with height

Satellite (6,165 words) [view diff] exact match in snippet view article find links to article

magnetic, gravitational field and the Sun's radiation pressure; satellites that are further away are affected more by other bodies' gravitational field by the

Electromagnetic stress–energy tensor (1,204 words) [view diff] exact match in snippet view article find links to article

represents the contribution of electromagnetism to the source of the gravitational field (curvature of space–time) in general relativity. The electromagnetic

Center of mass (4,886 words) [view diff] exact match in snippet view article find links to article

being applied to a satellite, the slight variation (gradient) in gravitational field between closer-to and further-from the planet (stronger and weaker

Neutron interferometer (614 words) [view diff] exact match in snippet view article find links to article

oriented such that two paths are at different heights in Earth's gravitational field. The interferometer was sufficiently sensitive to detected the phase

Arthur Eddington (6,251 words) [view diff] exact match in snippet view article find links to article

theory: the measurement of the deflection of light by the Sun's gravitational field. In fact, Dyson's argument for the indispensability of Eddington's

Neutron interferometer (614 words) [view diff] exact match in snippet view article find links to article

oriented such that two paths are at different heights in Earth's gravitational field. The interferometer was sufficiently sensitive to detected the phase

Oleg D. Jefimenko (598 words) [view diff] exact match in snippet view article find links to article

dipole moment) d (cogravitational moment) E (electric field) g (gravitational field) B (magnetic field) K (cogravitational field) ε0 (permittivity of

Galaxy groups and clusters (1,468 words) [view diff] exact match in snippet view article find links to article

in approximate hydrostatic equilibrium with the overall cluster gravitational field, the total mass distribution can be determined. It turns out the

Time dilation (6,566 words) [view diff] exact match in snippet view article find links to article

dilation both observers agree that the clock nearer the center of the gravitational field is slower in rate, and they agree on the ratio of the difference

Malament–Hogarth spacetime (942 words) [view diff] exact match in snippet view article find links to article

blueshifted (their wavelengths become shorter) due to the intense gravitational field. This effect is even more pronounced near the inner horizon due to

Geomathematics (1,426 words) [view diff] exact match in snippet view article find links to article

similar characteristics because they're measuring small changes in the gravitational field based on the density of the rocks in that area. While similar gravity

Holtsmark distribution (1,297 words) [view diff] case mismatch in snippet view article find links to article

Chandrasekhar, S.; J. von Neumann (1942). "The Statistics of the Gravitational Field Arising from a Random Distribution of Stars. I. The Speed of Fluctuations"

Sun-synchronous orbit (1,629 words) [view diff] exact match in snippet view article find links to article

eccentricity evolve, due to higher-order perturbations in the Earth's gravitational field, the pressure of sunlight, and other causes. Earth observation satellites

Geodetic Reference System 1980 (945 words) [view diff] exact match in snippet view article find links to article

deals with the measurement and representation of the earth, its gravitational field and geodynamic phenomena (polar motion, earth tides, and crustal

Messier 107 (738 words) [view diff] case mismatch in snippet view article find links to article

1086/163249. Pichardo, Bárbara; et al. (July 2004), "Models for the Gravitational Field of the Galactic Bar: An Application to Stellar Orbits in the Galactic

Luna 10 (659 words) [view diff] case mismatch in snippet view article find links to article

Media. ISBN 9780387739762 – via Google Books. Determination of the Gravitational Field of the Moon by the Motion of the AMs LUNA-10 (PDF) (Report). Archived

Super-Neutron (404 words) [view diff] exact match in snippet view article find links to article

years before, as an astronomer, he discovered that a planet with no gravitational field had entered the Solar System from the region of the south celestial

Spherical Earth (1,639 words) [view diff] exact match in snippet view article find links to article

that deals with the measurement and representation of Earth, its gravitational field and geodynamic phenomena (polar motion, Earth tides, and crustal

Gauge gravitation theory (1,138 words) [view diff] exact match in snippet view article find links to article

linear frame bundle FX{\displaystyle FX}, and a metric (tetrad) gravitational field plays the role of a Higgs field responsible for spontaneous symmetry

Blayne Heckel (1,131 words) [view diff] exact match in snippet view article find links to article

R.; Fortson, E. N. (1992). "Search for a coupling of the Earth's gravitational field to nuclear spins in atomic mercury". Physical Review Letters. 68

Galaxy cluster (1,647 words) [view diff] exact match in snippet view article find links to article

predictions of general relativity: energy loss from light escaping a gravitational field. Photons emitted from the center of a galaxy cluster should lose

Luna 15 (589 words) [view diff] exact match in snippet view article find links to article

Moon. Luna 15 was capable of studying circumlunar space, the lunar gravitational field, and the chemical composition of lunar rocks. It was also capable

Penrose interpretation (1,078 words) [view diff] exact match in snippet view article find links to article

lowest-energy state: in this case, one object in one location producing one gravitational field. If Penrose is right, gravity yanks objects back into a single location

Marisat (1,053 words) [view diff] exact match in snippet view article find links to article

rotating at approximately 30 rpm to provide stability in the Earth's gravitational field. They were originally designed to last 5 years, but survived much

Rocket Ship Galileo (750 words) [view diff] exact match in snippet view article find links to article

and investment of resources needed for any jaunt outside Earth's gravitational field. (...) The idea of private people (boys in this case) being able

Aether theories (1,895 words) [view diff] exact match in snippet view article find links to article

community today. Albert Einstein sometimes used the word aether for the gravitational field within general relativity, but the only similarity of this relativistic

List of lunar probes (948 words) [view diff] exact match in snippet view article find links to article

December 2011 – 17 December 2012 orbiter success mapped the Moon's gravitational field; intentionally impacted at end of mission 2011-046A [34] GRAIL B

Sadamitsu the Destroyer (999 words) [view diff] exact match in snippet view article find links to article

safely Recover Ryūkei-dai by compressing their body in an immense gravitational field then launching the target into space, unharmed. After analyzing Sadamitsu's

Thrust-to-weight ratio (1,541 words) [view diff] exact match in snippet view article find links to article

actual performance will often be affected by buoyancy and local gravitational field strength. Table for Jet and rocket engines: jet thrust is at sea

Tolman–Oppenheimer–Volkoff equation (2,080 words) [view diff] exact match in snippet view article find links to article

mass contained inside radius r {\textstyle r} , as measured by the gravitational field felt by a distant observer. It satisfies m ( 0 ) = 0 {\textstyle

Robert Kraichnan (1,258 words) [view diff] case mismatch in snippet view article find links to article

Bachelor thesis at MIT in 1947, titled "Quantum Theory of the Linear Gravitational Field". Following an approach that was echoed by Suraj N. Gupta, Richard

William M. Kaula (661 words) [view diff] exact match in snippet view article find links to article

parameters (1963) NASA Technical Note D-1847 Tesseral harmonics of the gravitational field and geodetic datum shifts derived from camera observations of satellites

Five-dimensional space (1,572 words) [view diff] exact match in snippet view article find links to article

dimensions. They suggested that electromagnetism resulted from a gravitational field that is “polarized” in the fifth dimension. The main novelty of Einstein

Electricity (9,343 words) [view diff] exact match in snippet view article find links to article

acts between two charges in a similar manner to the way that the gravitational field acts between two masses, and like it, extends towards infinity and

Scorpius X-1 (1,101 words) [view diff] exact match in snippet view article find links to article

of energy. As this stellar material accelerates in Scorpius X-1's gravitational field, X-rays are emitted. The measured luminosity for Scorpius X-1 is

Cosmic noise (955 words) [view diff] exact match in snippet view article find links to article

to velocities large enough to allow them to escape from the Sun's gravitational field. Solar wind causes sudden bursts of cosmic noise absorption in the

Suraj N. Gupta (369 words) [view diff] case mismatch in snippet view article find links to article

Wayback Machine Gupta, Suraj N. (1952). "Quantization of Einstein's Gravitational Field: General Treatment". Proceedings of the Physical Society. Series

Ion cyclotron resonance (659 words) [view diff] exact match in snippet view article find links to article

perpendicular to the field (e.g., in the presence of an electrical or gravitational field) resulting in a cycloid. Ion cyclotron resonance heating (or ICRH)

Laplace's equation (4,943 words) [view diff] exact match in snippet view article find links to article

electrostatic potential. Let g {\displaystyle \mathbf {g} } be the gravitational field, ρ {\displaystyle \rho } the mass density, and G {\displaystyle G}

Grand Tour program (1,157 words) [view diff] case mismatch in snippet view article find links to article

Missions to the Outer Solar System Using Energy Derived from the Gravitational Field of Jupiter" (PDF). Astronautica Acta. 12: 329–337. Butrica, Andrew

1919 in science (1,028 words) [view diff] case mismatch in snippet view article find links to article

(1920). "A Determination of the Deflection of Light by the Sun's Gravitational Field, from Observations Made at the Solar eclipse of May 29, 1919". Philosophical

Gravitational anomaly (576 words) [view diff] exact match in snippet view article find links to article

{\displaystyle D} is the spacetime dimension. Consider a classical gravitational field represented by the vielbein e μ a {\displaystyle e_{\;\mu }^{a}}

Weighing scale (5,282 words) [view diff] exact match in snippet view article find links to article

local gravitational field. (On Earth, for example, these can amount to ±0.5% between locations.) A change in the strength of the gravitational field caused

Binary pulsar (1,712 words) [view diff] exact match in snippet view article find links to article

timing effects. When the two bodies are in close proximity, the gravitational field is stronger, the passage of time is slowed – and the time between

Ullage (807 words) [view diff] exact match in snippet view article find links to article

the tank after engine start. On the ground, or in the continued gravitational field of Earth during rocket-propelled ascent, the space between the top

Statics (1,739 words) [view diff] exact match in snippet view article find links to article

An example of a body force is the weight of a body in the Earth's gravitational field. In addition to the tendency to move a body in the direction of its

Mechanical energy (2,133 words) [view diff] exact match in snippet view article find links to article

U{\displaystyle U}, (by virtue of its position within the Earth's gravitational field; Earth's mass is M{\displaystyle M}). Hence, mechanical energy

Nuclear photonic rocket (1,130 words) [view diff] exact match in snippet view article find links to article

already in orbit at a velocity of 9,100 m/s. Upon escaping the Earth's gravitational field the rocket will have a heliocentric velocity of 30 km/s in interplanetary

Size (1,539 words) [view diff] exact match in snippet view article find links to article

of mass) on the surface of the Earth (its mass multiplied by the gravitational field strength). Its weight will be less on Mars (where gravity is weaker)

Albert Einstein (22,329 words) [view diff] exact match in snippet view article find links to article

an observer in an infinitesimally small box falling freely in a gravitational field would be unable to find any evidence that the field exists. In 1911

Post-Newtonian expansion (1,102 words) [view diff] exact match in snippet view article find links to article

which is the ratio of the velocity of the matter that creates the gravitational field, to the speed of light, which in this case is more precisely called

K. C. Venugopal (754 words) [view diff] exact match in snippet view article find links to article

[citation needed] For Mr. Venugopal, Kannur has not been his political gravitational field ever since he politically relocated himself to Alappuzha following

Gravitational keyhole (947 words) [view diff] exact match in snippet view article find links to article

than a dozen radii, should include the oblateness of the planet—its gravitational field is not spherically symmetric. For even closer trajectories, gravity

Valentine Joseph (1,018 words) [view diff] exact match in snippet view article find links to article

6, pp. 631–639. Valentine Joseph (1966) A spatially homogeneous gravitational field. Proceedings of the Cambridge Philosophical Society, Volume 62, pp

Kappa Tauri (893 words) [view diff] case mismatch in snippet view article find links to article

(1920). "A Determination of the Deflection of Light by the Sun's Gravitational Field, from Observations Made at the Solar eclipse of May 29, 1919". Phil

InterWorld (series) (1,118 words) [view diff] exact match in snippet view article

from an Earth that is much denser, therefore he possess a greater gravitational field and is built like a tank with feet. J/O HrKr: The youngest of all

Intracluster medium (1,513 words) [view diff] exact match in snippet view article find links to article

metallicity of the gas can rise to above that of the sun. Due to the gravitational field of clusters, metal-enriched gas ejected from supernova remains gravitationally

Atmospheric physics (1,848 words) [view diff] exact match in snippet view article find links to article

atmosphere whereas ocean tides are primarily excited by the Moon's gravitational field. This means that most atmospheric tides have periods of oscillation

Tipler cylinder (1,357 words) [view diff] case mismatch in snippet view article find links to article

method of time travel. Notes van Stockum, Willem Jacob (1936). "The Gravitational Field of a Distribution of Particles Rotating about an Axis of Symmetry"

Time travel (8,559 words) [view diff] exact match in snippet view article find links to article

is to take one entrance of the wormhole and move it to within the gravitational field of an object that has higher gravity than the other entrance, and

String cosmology (1,414 words) [view diff] exact match in snippet view article find links to article

the Einstein action describing a scalar field interacting with a gravitational field in D dimensions. Indeed, the following identity holds: κ=κ0e2Φ0=(8πGD)12=8πMp

Virtual black hole (530 words) [view diff] exact match in snippet view article find links to article

analysis of the Hamilton–Jacobi equation for a centrally symmetric gravitational field in spaces of different dimensions (with help of the resulting uncertainty

Flyby anomaly (2,274 words) [view diff] exact match in snippet view article find links to article

interplanetary Rosetta and Philae spacecraft and the determination of the gravitational field of comets and asteroids - (DLR) @ TU München, 2012" (PDF). Archived

Fluid mechanics (2,639 words) [view diff] exact match in snippet view article find links to article

example, in understanding plate tectonics and anomalies in the Earth's gravitational field), to meteorology, to medicine (in the context of blood pressure)

Scientific law (5,615 words) [view diff] exact match in snippet view article find links to article

the curvature of space-time due to mass–energy equivalent to the gravitational field. Solving the equation for the geometry of space warped due to the

Philosophy of space and time (5,832 words) [view diff] exact match in snippet view article find links to article

Principle, which states that the force felt by an observer in a given gravitational field and that felt by an observer in an accelerating frame of reference

Gibbons–Hawking–York boundary term (5,576 words) [view diff] exact match in snippet view article find links to article

n{\displaystyle n}-point function is determined by the state of the gravitational field on the boundary of the spacetime region considered. The key observation

ASTER (spacecraft) (1,102 words) [view diff] exact match in snippet view article

rotation speed), the internal properties (structure, mass distribution, gravitational field) and surface properties (mineral composition, morphology, elemental

Physics and Star Wars (5,213 words) [view diff] exact match in snippet view article find links to article

star system orbiting the larger star would be drawn closer to its gravitational field, causing the planet to endure heat of great temperatures during this

Clock drift (1,073 words) [view diff] exact match in snippet view article find links to article

gives us gravitational time dilation. Briefly, a clock in a stronger gravitational field (e.g. closer to a planet) will appear to tick more slowly. People

Well (disambiguation) (390 words) [view diff] exact match in snippet view article

health Gravity well or gravitational, a conceptual model of the gravitational field surrounding a body in space Potential well, a concept used in physics

Gravitational biology (561 words) [view diff] exact match in snippet view article find links to article

biological cells is inversely proportional to the strength of the gravitational field exerted on the cell. That is, in stronger gravitational fields the

Banked turn (2,101 words) [view diff] exact match in snippet view article find links to article

L={mg \over {\cos \theta }}} where g{\displaystyle g} is the gravitational field strength. The radius of the turn can now be calculated: r=v2gtan⁡θ{\displaystyle

Inner moon (1,655 words) [view diff] exact match in snippet view article find links to article

giant planet are preferentially deflected towards the planet by its gravitational field, so that the frequency of potential impactors passing through a given

Kepler-1647b (628 words) [view diff] exact match in snippet view article find links to article

separately, e.g., a passing protoplanet caught into orbit due to the gravitational field of the giant planet. Given that the planet is within the habitable

Tharwa, Australian Capital Territory (897 words) [view diff] exact match in snippet view article find links to article

Earth's surface is only very slightly distorted by a non-vertical gravitational field 0.3" to north and 0.6" to the west. Magnetic declination at Tharwa

Criticism of the theory of relativity (10,612 words) [view diff] exact match in snippet view article find links to article

matter-free solutions of the field equations. This means that the "inertio-gravitational field", which describes both gravity and inertia, can exist in the absence

Triton (novel) (909 words) [view diff] exact match in snippet view article

fiction genre. The novel offers a unique directional artificial gravitational field created by inducing relativistic motion of atomic particles, essentially

Relativistic electromagnetism (1,236 words) [view diff] exact match in snippet view article find links to article

problem Wheeler–Feynman absorber theory Paradox of a charge in a gravitational field Kargon, Robert; Achinstein, Peter (1987). Kelvin's Baltimore Lectures

List of equations in fluid mechanics (339 words) [view diff] exact match in snippet view article find links to article

Fluid density at gravitational equipotential containing r g = g(r) = Gravitational field strength at point r ∇P = Pressure gradient ∇P=ρg{\displaystyle \nabla

Z Andromedae (1,993 words) [view diff] exact match in snippet view article find links to article

gravity on the surface. The outflow of matter is captured by the gravitational field of the white dwarf and falls on its surface in the end. At least

Theoretical motivation for general relativity (3,877 words) [view diff] exact match in snippet view article find links to article

{L}}_{p}} and the density Le{\displaystyle {\mathcal {L}}_{e}} of the gravitational field generated by all other particles including those comprising the Earth

Ezra T. Newman (739 words) [view diff] exact match in snippet view article find links to article

interesting recent work has involved the problem of reconstructing the gravitational field within some region from observations of how optical images are lensed

Criticism of the theory of relativity (10,612 words) [view diff] exact match in snippet view article find links to article

matter-free solutions of the field equations. This means that the "inertio-gravitational field", which describes both gravity and inertia, can exist in the absence

Pseudotensor (1,014 words) [view diff] exact match in snippet view article find links to article

that theory, one cannot describe the energy and momentum of the gravitational field by an energy–momentum tensor. Instead, one introduces objects that

Georges Lemaître (4,777 words) [view diff] exact match in snippet view article find links to article

Lemaître returned to MIT to present his doctoral thesis on The gravitational field in a fluid sphere of uniform invariant density according to the theory

Achilles Papapetrou (1,324 words) [view diff] exact match in snippet view article find links to article

1038/168040a0 Α. Papapetrou, A static solution of the equations of the gravitational field for an arbitrary charge distribution., Proc. Roy. Irish Acad. A 51

Electric potential (2,247 words) [view diff] exact match in snippet view article find links to article

the object with respect to the field. Two such force fields are a gravitational field and an electric field (in the absence of time-varying magnetic fields)

Physical geography (3,583 words) [view diff] exact match in snippet view article find links to article

deals with the measurement and representation of the earth, its gravitational field, and other geodynamic phenomena, such as crustal motion, oceanic

Kerr metric (6,605 words) [view diff] exact match in snippet view article find links to article

it should be able to be used as an exterior solution to model the gravitational field around a rotating massive object other than a black hole such as

White hole (3,266 words) [view diff] exact match in snippet view article find links to article

towards it will eventually reach the black hole horizon). Imagine a gravitational field, without a surface. Acceleration due to gravity is the greatest on

Property (philosophy) (2,303 words) [view diff] exact match in snippet view article

extrinsic property that varies depending on the strength of the gravitational field in which the respective object is placed. Another example of a relational

Francesco Calogero (501 words) [view diff] exact match in snippet view article find links to article

quantum behavior is caused by the stochastic component of the local gravitational field due to the chaotic component of the motion of all particles of the

Rhea (moon) (2,979 words) [view diff] case mismatch in snippet view article

doi:10.1029/2006GL028100. Anderson, John D. (July 2008). Rhea's Gravitational Field and Internal Structure. 37th COSPAR Scientific Assembly. Held 13–20

Sound (4,342 words) [view diff] exact match in snippet view article find links to article

able to carry a tiny amount of mass and is surrounded by a weak gravitational field. Sound is transmitted through gases, plasma, and liquids as longitudinal

1963 in science (1,451 words) [view diff] exact match in snippet view article find links to article

Indian-English anthropologist and author. Kerr, R. P. (1963). "Gravitational field of a spinning mass as an example of algebraically special metrics"

Tranquility Base (1,768 words) [view diff] exact match in snippet view article find links to article

Columbia in orbit, and an imperfect understanding of the Moon's uneven gravitational field, resulted in navigation errors which pushed the powered descent initiation

39382 Opportunity (711 words) [view diff] exact match in snippet view article find links to article

planets and therefore it will not be pulled out of orbit by Jupiter's gravitational field. As a result of this, it is likely that the asteroid will remain

Stationary spacetime (1,033 words) [view diff] exact match in snippet view article find links to article

because of mass–energy equivalence, can also act as the source of a gravitational field. The situation is analogous to a static electromagnetic field where

Innermost stable circular orbit (1,227 words) [view diff] exact match in snippet view article find links to article

angular momentum). For a non-spinning massive object, where the gravitational field can be expressed with the Schwarzschild metric, the ISCO is located

Nix (moon) (2,605 words) [view diff] exact match in snippet view article

the periodic local fluctuation of 9 percent in the Pluto–Charon gravitational field strength. The New Horizons spacecraft visited the Pluto system and

Parabola of safety (263 words) [view diff] exact match in snippet view article find links to article

is the initial speed of projectile and g{\displaystyle g} is the gravitational field. Focus of the parabola is the shooting position. Maximum height (H{\displaystyle

Stellar rotation (3,366 words) [view diff] exact match in snippet view article find links to article

several seconds between each pulse. A black hole is an object with a gravitational field that is sufficiently powerful that it can prevent light from escaping

37452 Spirit (649 words) [view diff] exact match in snippet view article find links to article

planets, it will therefore not be pulled out of orbit by Jupiter's gravitational field and likely remain in a stable orbit for thousands of years. Spirit

ADM formalism (2,429 words) [view diff] exact match in snippet view article find links to article

In other words, the ADM energy is computed as the strength of the gravitational field at infinity. If the required asymptotic form is time-independent

Hydra (moon) (2,599 words) [view diff] exact match in snippet view article

maintained by the periodic local fluctuation of 5% in the Pluto–Charon gravitational field strength. The New Horizons spacecraft visited the Pluto system and

Scalar–tensor–vector gravity (1,675 words) [view diff] exact match in snippet view article find links to article

equation of motion is obtained in the spherically symmetric, static gravitational field of a point mass of mass M {\displaystyle M} : r ¨ = − G N M r 2 [

Gravity of Mars (6,204 words) [view diff] exact match in snippet view article find links to article

for future Mars landings. To understand the gravity of Mars, its gravitational field strength g and gravitational potential U are often measured. Simply

Jun Ye (1,173 words) [view diff] exact match in snippet view article find links to article

potentially be used for research into variations in the Earth's gravitational field, searching for particles of dark matter, performing quantum simulations

Pressure head (1,240 words) [view diff] exact match in snippet view article find links to article

in areas in which g{\displaystyle g} is constant. However, if the gravitational field fluctuates, we can prove that pressure head fluctuates with it. If

Jyotirmoy Ghosh (799 words) [view diff] exact match in snippet view article find links to article

entitled "On some problems in elasticity and on radially symmetric gravitational field in continuous matter". Ghosh started his academic career as a professor

Pendulum (mechanics) (7,293 words) [view diff] exact match in snippet view article

The motion does not lose energy to friction or air resistance. The gravitational field is uniform. The support does not move. The differential equation

Gunnar Nordström (1,378 words) [view diff] case mismatch in snippet view article find links to article

science), pages 173–176 Nordström, G. (1918). "On the Energy of the Gravitational Field in Einstein's Theory". Verhandl. Koninkl. Ned. Akad. Wetenschap.

Double pendulum (2,333 words) [view diff] exact match in snippet view article find links to article

The last term is the potential energy of the bodies in a uniform gravitational field. The dot-notation indicates the time derivative of the variable in

Einstein ring (2,393 words) [view diff] case mismatch in snippet view article find links to article

(1936). "Lens-like Action of a Star by the Deviation of Light in the Gravitational Field" (PDF). Science. 84 (2188): 506–507. Bibcode:1936Sci....84..506E

Heat death of the universe (3,347 words) [view diff] exact match in snippet view article find links to article

speculations." A 2010 analysis of entropy states, "The entropy of a general gravitational field is still not known", and "gravitational entropy is difficult to quantify"

Slinky (2,637 words) [view diff] exact match in snippet view article find links to article

{32L}{g}}}\,,} where L {\textstyle L} is the length of the Slinky in the gravitational field of the Earth and g {\textstyle g} the acceleration due to gravity

Birkhoff's theorem (relativity) (728 words) [view diff] exact match in snippet view article

intuitive idea of Birkhoff's theorem is that a spherically symmetric gravitational field should be produced by some massive object at the origin; if there

Weighted catenary (361 words) [view diff] exact match in snippet view article find links to article

MathOverflow: classical mechanics - Catenary curve under non-uniform gravitational field - MathOverflow, accessdate: April 13, 2017 Definition from WhatIs

Compact object (2,582 words) [view diff] exact match in snippet view article find links to article

reducing the tidal stress near the event horizon, and reducing the gravitational field strength at the horizon. However, there will not be any further qualitative

Robert L. Forward (1,499 words) [view diff] exact match in snippet view article find links to article

period, it means that the detector is experiencing a measurable gravitational field gradient. In 1984, Forward published his theoretical design for a

Slinky (2,637 words) [view diff] exact match in snippet view article find links to article

{32L}{g}}}\,,} where L {\textstyle L} is the length of the Slinky in the gravitational field of the Earth and g {\textstyle g} the acceleration due to gravity

Geosynchronous orbit (3,171 words) [view diff] exact match in snippet view article find links to article

as the solar wind, radiation pressure, variations in the Earth's gravitational field, and the gravitational effect of the Moon and Sun, and thrusters

Rudolf Mössbauer (766 words) [view diff] exact match in snippet view article find links to article

used this effect to prove the red shift of gamma radiation in the gravitational field of the Earth; this Pound–Rebka experiment was one of the first experimental

Radhanath Sikdar (1,028 words) [view diff] exact match in snippet view article find links to article

surveys—the study of the earth’s geometric shape orientation in space and gravitational field. He did not just use the established methods but invented his own

Boyer–Lindquist coordinates (1,130 words) [view diff] exact match in snippet view article find links to article

Equating this with the energy–momentum tensor for the gravitational field leads to the Kerr–Newman electrovacuum solution. Boyer, Robert H

History of classical mechanics (2,318 words) [view diff] exact match in snippet view article find links to article

to the density of the fluid they are immersed in. This is a correct approximation for objects in Earth's gravitational field moving in air or water.

Outline of geophysics (1,053 words) [view diff] exact match in snippet view article find links to article

Geodesy – measurement and representation of the Earth, including its gravitational field. Geodynamics – study of modes of transport deformation within the

General relativity priority dispute (5,427 words) [view diff] exact match in snippet view article find links to article

Albert Einstein's discovery of the gravitational field equations of general relativity and David Hilbert's almost simultaneous derivation of the theory

Eridanus II (6,016 words) [view diff] exact match in snippet view article find links to article

galaxies) is believed to be the result either of tidal stripping in the gravitational field of the larger body, or of ram pressure by direct contact with its

V404 Cygni (1,557 words) [view diff] exact match in snippet view article find links to article

the Lense-Thirring effect due to warping of space/time by the huge gravitational field in the vicinity of the black hole. On 15 June 2015 NASA's Swift satellite

Kuiper quadrangle (2,848 words) [view diff] exact match in snippet view article find links to article

conditions. Real differences may be the result of Mercury's size, gravitational field, proximity to the Sun, internal composition and structure, or timing

Frame of reference (3,440 words) [view diff] exact match in snippet view article find links to article

is common (see, for example, the Schwarzschild solution for the gravitational field outside an isolated sphere). There are two types of observational

Horseshoe orbit (1,341 words) [view diff] exact match in snippet view article find links to article

closer to or farther from the Earth, the changing pull of Earth's gravitational field causes it to accelerate or decelerate, causing a change in its orbit

Deja Q (1,455 words) [view diff] exact match in snippet view article find links to article

the planet is already experiencing damaging effects of the moon's gravitational field. As the crew is working, Q (John de Lancie) appears on the bridge

Monkey and hunter (600 words) [view diff] exact match in snippet view article find links to article

−g). Because of Galilean equivalence, the (approximately) constant gravitational field (approximately) disappears, leaving us with only the horizontal velocity

Schuler tuning (896 words) [view diff] exact match in snippet view article find links to article

center of gravity equals the radius of Earth, suspended in a uniform gravitational field of the same strength as that experienced at Earth's surface. If suspended

Shield (disambiguation) (817 words) [view diff] exact match in snippet view article

hypothetical process of shielding an object from the influence of a gravitational field Heat shield, which protects a spacecraft or ballistic missile Tunnelling

Zero-point energy (27,132 words) [view diff] exact match in snippet view article find links to article

may be able to differ from material to material. A strong toroidal gravitational field that acts against the force of gravity could be generated by materials

M-type asteroid (2,510 words) [view diff] exact match in snippet view article find links to article

the larger asteroids, one can estimate mass by observing how their gravitational field affects other objects, including other asteroids and orbiting or

Quark star (3,056 words) [view diff] exact match in snippet view article find links to article

supernova, be extremely dense and small, and possess a very high gravitational field. They would also lack some features of neutron stars, unless they

Mikkel Andersen (physicist) (740 words) [view diff] exact match in snippet view article

existing models, for measuring local fluctuations in the Earth's gravitational field. Reynolds, L. A.; Schwartz, E.; Ebling, U.; Weyland, M.; Brand, J

External ballistics (13,555 words) [view diff] exact match in snippet view article find links to article

vacuum of space, but most certainly flying under the influence of a gravitational field. Gun-launched projectiles may be unpowered, deriving all their velocity

Tensor–vector–scalar gravity (1,974 words) [view diff] exact match in snippet view article find links to article

dimensionless function. In the case of a spherically symmetric, static gravitational field, this Lagrangian reproduces the MOND acceleration law after the substitutions

Michael Ovenden (256 words) [view diff] case mismatch in snippet view article find links to article

Advances in Science (1952) The Deflection of Light by the Solar Gravitational Field (1952) Looking at the Stars (1957) Artificial Satellites (1960) Life

Geoid (3,056 words) [view diff] exact match in snippet view article find links to article

Likewise, spirit levels will always be parallel to the geoid. Earth's gravitational field is not uniform. An oblate spheroid is typically used as the idealized

Deep Space Industries (901 words) [view diff] exact match in snippet view article find links to article

fuel costs of repeatedly returning to and escaping from Earth's gravitational field, and additionally, that servicing communications satellite constellations

Tractrix (1,437 words) [view diff] exact match in snippet view article find links to article

homogeneous string attached to two points that is subjected to a gravitational field. The catenary has the equation y(x) = a cosh x/a. The trajectory

Government (4,133 words) [view diff] exact match in snippet view article find links to article

states reorganize and energize the smaller objects within their gravitational field. Another explanation includes the need to properly manage infrastructure

Closed timelike curve (1,924 words) [view diff] exact match in snippet view article find links to article

Timelike Poincaré recurrence theorem Stockum, W. J. van (1937). "The gravitational field of a distribution of particles rotating around an axis of symmetry

Taurus (constellation) (3,898 words) [view diff] case mismatch in snippet view article

(1920). "A Determination of the Deflection of Light by the Sun's Gravitational Field, from Observations Made at the Solar eclipse of May 29, 1919". Phil

Attilio Palatini (297 words) [view diff] exact match in snippet view article find links to article

proposed a new approach to the variational formulation of Einstein's gravitational field equations. In the same paper, Palatini also showed that the variations

Depth–slope product (921 words) [view diff] exact match in snippet view article find links to article

Earth, or any planetary body with a dominant influence on the local gravitational field), the only two variables that determine the boundary shear stress

Sea level (4,395 words) [view diff] exact match in snippet view article find links to article

this geoid surface, being an equipotential surface of the Earth's gravitational field which, in itself, does not conform to a simple sphere or ellipsoid

String theory (15,352 words) [view diff] exact match in snippet view article find links to article

relativity, a black hole is defined as a region of spacetime in which the gravitational field is so strong that no particle or radiation can escape. In the currently

Wormholes in fiction (5,262 words) [view diff] exact match in snippet view article find links to article

causing a distortion of space-time coordinates. You know that a gravitational field bends light; the light of a star is deflected in passing the sun

Alister Watson (551 words) [view diff] exact match in snippet view article find links to article

Mind, volume 47, pp. 440– 451 (1938) and Principal directions in a gravitational field. Proceedings of the Edinburgh Mathematical Society (Series 2) 6.01