entropy wave
41Density of states — Condensed matter physics Phases · Phase tr …
42Defining equation (physics) — For common nomenclature of base quantities used in this article, see Physical quantity. For 4 vector modifications used in relativity, see Four vector. Very often defining equations are in the form of a constitutive equation, since parameters of… …
43Atmospheric reentry — refers to the movement of human made or natural objects as they enter the atmosphere of a planet from outer space, in the case of Earth from an altitude above the edge of space. This article primarily addresses the process of controlled reentry… …
44Old quantum theory — Quantum mechanics Uncertainty principle …
45Density matrix — Mixed state redirects here. For the psychiatric condition, see Mixed state (psychiatry). In quantum mechanics, a density matrix is a self adjoint (or Hermitian) positive semidefinite matrix (possibly infinite dimensional) of trace one, that… …
46Rayleigh flow — refers to diabatic flow through a constant area duct where the effect of heat addition or rejection is considered. Compressibility effects often come into consideration, although the Rayleigh flow model certainly also applies to incompressible… …
47Prandtl-Meyer expansion fan — A Prandtl Meyer expansion fan is a centered expansion process, which turns a supersonic flow around a convex corner. The fan consists of infinite number of Mach waves, diverging from a sharp corner. In case of a smooth corner, these waves can be… …
48Kree — comicbookspecies caption=Some of the most famous Kree. Art by Scott Kolins. species=Kree publisher=Marvel Comics debut= Fantastic Four #65 (August 1967) creators=Stan Lee Jack Kirby homeworld= powers= notable members= subcat=Marvel Comics altcat …
49Planck constant — Planck s relation redirects here. For the law governing black body radiation, see Planck s law. Values of h Units 6.62606957(29)×10−34 J·s[1] 4.135 …
50MPEG-1 — Moving Picture Experts Group Phase 1 (MPEG 1) Filename extension .mpg, .mpeg, .mp1, .mp2, .mp3, .m1v, .m1a, .m2a, .mpa, .mpv Internet media type audio/mpeg, video/mpeg Developed by ISO, IEC Type of format audio, vid …
