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four velocity

См. также в других словарях:

  • Four-velocity — In physics, in particular in special relativity and general relativity, the four velocity of an object is a four vector (vector in four dimensional spacetime) that replaces classical velocity (a three dimensional vector). It is chosen in such a… …   Wikipedia

  • four-velocity — keturmatis greitis statusas T sritis fizika atitikmenys: angl. four dimensional velocity; four velocity vok. vierdimensionale Geschwindigkeit, f; Vierergeschwindigkeit, f rus. четырёхмерная скорость, f pranc. quadrivitesse, f; vitesse… …   Fizikos terminų žodynas

  • four-velocity — noun A generalization of velocity in four dimensional spacetime …   Wiktionary

  • Velocity-addition formula — In physics, a velocity addition formula is an equation that relates the velocities of moving objects in different reference frames. Contents 1 Galilean addition of velocities 2 Special theory of relativity 3 Derivation …   Wikipedia

  • Four-vector — In relativity, a four vector is a vector in a four dimensional real vector space, called Minkowski space. It differs from a vector in that it can be transformed by Lorentz transformations. The usage of the four vector name tacitly assumes that… …   Wikipedia

  • Four-momentum — In special relativity, four momentum is the generalization of the classical three dimensional momentum to four dimensional spacetime. Momentum is a vector in three dimensions; similarly four momentum is a four vector in spacetime. The… …   Wikipedia

  • Four-acceleration — In special relativity, four acceleration is a four vector and is defined as the change in four velocity over the particle s proper time:: mathbf{A} =frac{dmathbf{U{d au}=left(gamma udotgamma u c,gamma u^2mathbf a+gamma udotgamma umathbf u… …   Wikipedia

  • Four-current — Electromagnetism Electricity · …   Wikipedia

  • Velocity — In physics, velocity is defined as the rate of change of position. It is a vector physical quantity; both speed and direction are required to define it. In the SI (metric) system, it is measured in meters per second: (m/s) or ms 1. The scalar… …   Wikipedia

  • Four-force — In the special theory of relativity four force is a four vector that replaces the classical force; the four force is the four vector defined as the change in four momentum over the particle s own time::mathbf{F} = {dmathbf{P} over d au}.For a… …   Wikipedia

  • four-dimensional velocity — keturmatis greitis statusas T sritis fizika atitikmenys: angl. four dimensional velocity; four velocity vok. vierdimensionale Geschwindigkeit, f; Vierergeschwindigkeit, f rus. четырёхмерная скорость, f pranc. quadrivitesse, f; vitesse… …   Fizikos terminų žodynas

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