velocity doppler limit
71Stellar kinematics — is the study of the movement of stars without needing to understand how they acquired their motion. This differs from stellar dynamics, which takes into account gravitational effects. The motion of a star relative to the Sun can provide useful… …
72Proper motion — The proper motion of a star is its angular change in position over time as seen from the center of mass of the solar system.[1] It is measured in seconds of arc per year, arcsec/yr, where 3600 arcseconds equal one degree.[2] This contrasts with… …
73OpenAL — Original author(s) Loki Software Developer(s) Creative Technology St …
74Robert H. Dicke — Robert Henry Dicke Born May 6, 1916(1916 05 06) St. Louis, Missouri Died March 4, 1997(1997 03 04) (aged 80 …
75Airy wave theory — In fluid dynamics, Airy wave theory (often referred to as linear wave theory) gives a linearised description of the propagation of gravity waves on the surface of a homogeneous fluid layer. The theory assumes that the fluid layer has a uniform… …
76Upsilon Andromedae c — Planetbox begin name=Upsilon Andromedae cPlanetbox star star=Upsilon Andromedae A constell=Andromeda RA=RA|01|36|47.8 DEC=DEC|+41|24|20 dist ly = 43.9 dist pc = 13.5 class=F8VPlanetbox orbit semimajor = 0.830 ± 0.048 eccentricity = 0.262 ± 0.021… …
77Upsilon Andromedae d — Planetbox begin name=Upsilon Andromedae dPlanetbox star star=Upsilon Andromedae A constell=Andromeda RA=RA|01|36|47.8 DEC=DEC|+41|24|20 dist ly = 43.9 dist pc = 13.5 class=F8VPlanetbox orbit semimajor=2.54 plusmn; 0.15 eccentricity=0.258 plusmn;… …
7855 Cancri f — Planetbox begin name = 55 Cancri fPlanetbox image caption = An artist s impression of 55 Cancri f. The stars around its sun are the three innermost planets.Planetbox star star = 55 Cancri A constell = Cancer RA = RA|08|52|35.8 DEC = DEC|+28|19|51 …
79bat — bat1 /bat/, n., v., batted, batting. n. 1. Sports. a. the wooden club used in certain games, as baseball and cricket, to strike the ball. b. a racket, esp. one used in badminton or table tennis. c. a whip used by a jockey. d. the act of using a… …
80electron tube — an electronic device that consists, typically, of a sealed glass bulb containing two or more electrodes: used to generate, amplify, and rectify electric oscillations and alternating currents. Also called electronic tube. Cf. gas tube, vacuum tube …
