rotation curve
71Flying disc techniques — Flying discs (including Frisbees) can be thrown in many ways. All involve spinning the disc to give it gyroscopic stability, and accelerating its mass to a certain velocity. Without spin, a disc will wobble and fall; without velocity, the disc… …
72Centrifugal force (planar motion) — In classical mechanics, centrifugal force (from Latin centrum center and fugere to flee ) is one of the three so called inertial forces or fictitious forces that enter the equations of motion when Newton s laws are formulated in a non inertial… …
73Born coordinates — / ) are time like curves with fixed R .In relativistic physics, the Born coordinate chart is a coordinate chart for (part of) Minkowski spacetime, the flat spacetime of special relativity. It is often used to analyze the physical experience of… …
74mathematics — /math euh mat iks/, n. 1. (used with a sing. v.) the systematic treatment of magnitude, relationships between figures and forms, and relations between quantities expressed symbolically. 2. (used with a sing. or pl. v.) mathematical procedures,… …
75star — starless, adj. /stahr/, n., adj., v., starred, starring. n. 1. any of the heavenly bodies, except the moon, appearing as fixed luminous points in the sky at night. 2. Astron. any of the large, self luminous, heavenly bodies, as the sun, Polaris,… …
76turn — I (New American Roget s College Thesaurus) n. rotation, revolution; twirl, twist; deflection, diversion; coil, convulsion; change; crisis; aptitude, ability, skill; act, skit; spell, shift, tour, trick. v. revolve, rotate, pivot; reel; rebel,… …
77Kinematics — Classical mechanics Newton s Second Law History of classical mechanics  …
78Curveball — For the pseudonymous informant, see Curveball (informant). For the Ugly Betty episode, see Curveball (Ugly Betty). An animated diagram of a 12 6 curveball The curveball is a type of pitch in baseball thrown with a characteristic grip and hand… …
79Gödel metric — The Gödel metric is an exact solution of the Einstein field equations in which the stress energy tensor contains two terms, the first representing the matter density of a homogeneous distribution of swirling dust particles, and the second… …
80Liaison (mécanique) — Pour les articles homonymes, voir liaison. les Liaisons piston/bielle et piston/chemise sont des pivots glissants Un mécanisme est l association de plusieurs pièces liées entre elles par des contacts physiques qui les rendent totalement ou… …
