In relativity, proper velocity (also known as celerity) w of an object relative to an observer is the ratio between observer-measured displacement vector...

the proper time of the object. The four-velocity is the rate of change of four-position with respect to the proper time along the curve. The velocity, in...

special relativity, for unidirectional motion, proper acceleration is the rate of change of proper velocity with respect to coordinate time. In an inertial...

motion. Four-velocity (relativistic version of velocity for Minkowski spacetime) Group velocity Hypervelocity Phase velocity Proper velocity (in relativity...

Majewski, Steven R. (2006). "Stellar motions: parallax, proper motion, radial velocity and space velocity". University of Virginia. Archived from the original...

used. Lorentz transformation Minkowski space Proper length Proper acceleration Proper mass Proper velocity Clock hypothesis Peres metric Zwiebach 2004...

parallel. A proper velocity space model of hyperbolic geometry is given by proper velocities with vector addition given by the proper velocity addition formula:...

Related words are velocity, rapidity, and celerity which is proper velocity. Speed is a scalar, being the magnitude of the velocity vector which in relativity...

dispersion relation, one can calculate the frequency-dependent phase velocity and group velocity of each sinusoidal component of a wave in the medium, as a function...

In standard cosmology, comoving distance and proper distance (or physical distance) are two closely related distance measures used by cosmologists to define...