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searching for Thermal pressure 42 found (46 total)

Helium flash (1,613 words) [view diff] exact match in snippet view article find links to article

gravitational collapse by quantum mechanical pressure rather than thermal pressure. Subsequent hydrogen shell fusion further increases the mass of the

Degenerate matter (3,164 words) [view diff] exact match in snippet view article find links to article

dense stellar objects such as white dwarfs and neutron stars, where thermal pressure alone is not enough to avoid gravitational collapse. The term also

Gravitational collapse (1,621 words) [view diff] exact match in snippet view article find links to article

which point the collapse gradually comes to a halt as the outward thermal pressure balances the gravitational forces. The star then exists in a state

Toomre's stability criterion (529 words) [view diff] exact match in snippet view article find links to article

criterion can be used to compare the strength of gravity with that of thermal pressure. In the case of a differentially rotating disk, the shear force can

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

resulting in a type Ia supernova. A main sequence star supported by thermal pressure would expand and cool which automatically counterbalances an increase

Gravitational compression (329 words) [view diff] exact match in snippet view article find links to article

compression occurs until the hydrogen is nearly used up, reducing the thermal pressure of the fusion reaction. At the end of the Sun's life, gravitational

Ram pressure (2,457 words) [view diff] exact match in snippet view article find links to article

{\displaystyle \sigma _{ij}} is the sum of this ram pressure and the isotropic thermal pressure (in the absence of viscosity). In the simple case when the relative

Chandrasekhar limit (3,933 words) [view diff] exact match in snippet view article find links to article

pressure, compared to main sequence stars, which resist collapse through thermal pressure. The Chandrasekhar limit is the mass above which electron degeneracy

Thermal runaway (4,163 words) [view diff] exact match in snippet view article find links to article

star. When thermal pressure is in equilibrium with overlying pressure, a star will respond to the increase in temperature and thermal pressure due to initiation

Main sequence (6,813 words) [view diff] exact match in snippet view article find links to article

main-sequence stars are in hydrostatic equilibrium, where outward thermal pressure from the hot core is balanced by the inward pressure of gravitational

Interstellar medium (7,339 words) [view diff] exact match in snippet view article find links to article

in the ISM, and are typically more important, dynamically, than the thermal pressure. In the interstellar medium, matter is primarily in molecular form

Type II supernova (4,780 words) [view diff] exact match in snippet view article find links to article

nickel–iron core inert. Due to the lack of energy output creating outward thermal pressure, the core contracts due to gravity until the overlying weight of the

Magnetosonic wave (2,182 words) [view diff] exact match in snippet view article find links to article

magnetic and thermal pressure perturbations have matching signs. Conversely, for the slow mode v2 − < c2 s cos2 θ, so magnetic and thermal pressure perturbations

High energy density physics (604 words) [view diff] exact match in snippet view article find links to article

temperature where the radiation pressure is comparable to the thermal pressure and where thermal pressure is comparable to coulomb interactions. Recent discoveries

Shocks and discontinuities (magnetohydrodynamics) (1,720 words) [view diff] no match in snippet view article

{\displaystyle \rho } , v, p, B are the plasma density, velocity, (thermal) pressure and magnetic field respectively. The subscripts ∥ {\displaystyle \parallel

Mie–Grüneisen equation of state (2,261 words) [view diff] exact match in snippet view article find links to article

internal energy, and Γ is the Grüneisen parameter which represents the thermal pressure from a set of vibrating atoms. If we assume that Γ is independent of

Stellar collision (1,710 words) [view diff] exact match in snippet view article find links to article

consists of degenerate matter, there is no safe equilibrium between thermal pressure and the weight of overlying layers of the star. Because of this, runaway

Triple-alpha process (2,594 words) [view diff] exact match in snippet view article find links to article

of the star, the shell is able to expand in response to increased thermal pressure in the helium shell. Expansion cools this layer and slows the reaction

Pauli exclusion principle (3,449 words) [view diff] exact match in snippet view article find links to article

gravitational force of a star's mass is normally held in equilibrium by thermal pressure caused by heat produced in thermonuclear fusion in the star's core

Recoil (4,930 words) [view diff] no match in snippet view article find links to article

a shock absorber. Energy in firing a firearm comes in many forms (thermal, pressure) but for understanding recoil what matters is kinetic energy, which

Plasma parameters (2,384 words) [view diff] exact match in snippet view article find links to article

_{ci}}}\approx 0.137\,{\frac {\left(\mu n_{i}\right)^{\frac {1}{2}}}{B}}} thermal pressure to magnetic pressure ratio, or beta, β β = 8 π n k T B 2 ≈ 4.03 × 10

Fugacity (2,738 words) [view diff] exact match in snippet view article find links to article

coined on p. 54. Lewis, Gilbert Newton (1900). "A new conception of thermal pressure and a theory of solutions". Proceedings of the American Academy of

Plasma beta (1,872 words) [view diff] exact match in snippet view article find links to article

β {\displaystyle \beta } is always much smaller than 1 (otherwise thermal pressure would cause the plasma to grow and move in the vacuum chamber until

Type Ia supernova (5,017 words) [view diff] exact match in snippet view article find links to article

temperature of the white dwarf increases. A main sequence star supported by thermal pressure can expand and cool which automatically regulates the increase in thermal

White dwarf (18,161 words) [view diff] exact match in snippet view article find links to article

the hydrogen-fusing red dwarfs, whose cores are supported in part by thermal pressure, or the even lower-temperature brown dwarfs. The relationship between

Sun (18,503 words) [view diff] exact match in snippet view article find links to article

weight than the hydrogen atoms that were fused, resulting in less thermal pressure. The core is therefore shrinking, allowing the outer layers of the

Solar System (21,220 words) [view diff] exact match in snippet view article find links to article

density increased until hydrostatic equilibrium was achieved: the thermal pressure counterbalancing the force of gravity. At this point, the Sun became

Tolman–Oppenheimer–Volkoff limit (4,292 words) [view diff] exact match in snippet view article find links to article

be an absolute upper limit for the mass of a cold (as distinct from thermal pressure supported) self-gravitating body dates back to the 1932 work of Lev

Surface acoustic wave (4,065 words) [view diff] no match in snippet view article find links to article

applications include all areas of sensing (such as chemical, optical, thermal, pressure, acceleration, torque and biological). SAW sensors have seen relatively

Graham Fortune (519 words) [view diff] exact match in snippet view article find links to article

His thesis, supervised by Geoff Malcolm, was entitled Measurement of thermal pressure coefficients of polyethylene and polypropylene. After leaving university

Gilbert N. Lewis (4,199 words) [view diff] exact match in snippet view article find links to article

1021/ed061p104. Lewis, Gilbert Newton (1900). "A new conception of thermal pressure and a theory of solutions". Proceedings of the American Academy of

Quasi-harmonic approximation (932 words) [view diff] exact match in snippet view article find links to article

phonon system and contributes to the thermal expansion as a zero-point thermal pressure. The Helmholtz free energy F is given by F = E l a t ( V ) + 1 N ∑

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

treated a star as a sphere of gas held up against gravity by internal thermal pressure, and one of Eddington's chief additions was to show that radiation

Supernova neutrinos (4,391 words) [view diff] exact match in snippet view article find links to article

}+\mathrm {p} \rightarrow \mathrm {e} ^{+}+\mathrm {n} } When the thermal pressure created by neutrino heating increases above the pressure of the infalling

Fermi gas (5,612 words) [view diff] exact match in snippet view article find links to article

referred as degenerate matter. Standard stars avoid collapse by balancing thermal pressure (plasma and radiation) against gravitational forces. At the end of

Magnetosphere of Saturn (5,818 words) [view diff] exact match in snippet view article find links to article

configuration is present permanently. The contribution of the plasma thermal pressure gradient force may also be significant. In addition, an important contribution

Spin crossover (2,295 words) [view diff] no match in snippet view article find links to article

José Antonio Real, Ana Belén Gaspar and M. Carmen Muñoz (2005). "Thermal, pressure and light switchable spin-crossover materials". Dalton Trans. (12):

Magnetosphere of Jupiter (9,044 words) [view diff] exact match in snippet view article find links to article

configuration are the centrifugal force from the co-rotating plasma and thermal pressure of hot plasma, both of which act to stretch Jupiter's magnetic field

Nicholas Georgescu-Roegen (13,683 words) [view diff] exact match in snippet view article find links to article

be large enough to effectively withstand and confine the vehement thermal pressure of the plasmic deuterium/tritium fusion processes through an extended

List of dimensionless quantities (784 words) [view diff] exact match in snippet view article find links to article

{nk_{B}T}{B^{2}/2\mu _{0}}}} Plasma (physics) and Fusion power. Ratio of plasma thermal pressure to magnetic pressure, controlling the level of turbulence in a magnetised

Magnetic sail (21,749 words) [view diff] exact match in snippet view article find links to article

{\textstyle \beta _{i}=p_{plasma}/p_{mag}} which is the ratio of the plasma thermal pressure to the magnetic pressure, with terms: p p l a s m a = n k B T {\displaystyle

Nanogenerator (10,611 words) [view diff] no match in snippet view article find links to article

to be applied to underutilized energy sources such as solar, wind, thermal, pressure, human power, vibrations, etc. Self-powered nano/micro devices. One