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In physics, the Saha ionization equation is an expression that relates the ionization state of a gas in thermal equilibrium to the temperature and pressure. [1] [2] The equation is a result of combining ideas of quantum mechanics and statistical mechanics and is used to explain the spectral classification of stars.
The Meissner effect was given a phenomenological explanation by the brothers Fritz and Heinz London, who showed that the electromagnetic free energy in a superconductor is minimized provided = where H is the magnetic field and λ is the London penetration depth.
Hans Albrecht Bethe (/ ˈ b ɛ θ ə /; German: [ˈhans ˈbeːtə] ⓘ; July 2, 1906 – March 6, 2005) was a German-American physicist who made major contributions to nuclear physics, astrophysics, quantum electrodynamics and solid-state physics, and received the Nobel Prize in Physics in 1967 for his work on the theory of stellar nucleosynthesis.
In physics, mean free path is the average distance over which a moving particle (such as an atom, a molecule, or a photon) travels before substantially changing its direction or energy (or, in a specific context, other properties), typically as a result of one or more successive collisions with other particles.
The US Food and Drug Administration has finalized new standards that foods must meet before they can be labeled as “healthy.”. Requirements now include limits on saturated fat, sodium and ...
The 1933 All-Pro Team consisted of American football players chosen by various selectors for the All-Pro team of the National Football League (NFL) for the 1933 NFL season. Teams were selected by, among others, the NFL coaches (NFL), [ 1 ] the United Press , [ 2 ] Red Grange for Collyer's Eye (CE), [ 3 ] and the Green Bay Press-Gazette (GB).
The NFL playoff picture has nearly come into full focus with two weeks remaining in the regular season. Even on a short week, there's still a lot to play for.
Play Spades for free on Games.com alone or with a friend in this four player trick taking classic. By Masque Publishing. Advertisement. Advertisement. all. board. card. casino. puzzle. other. 2048 ...