10 мая 2018 г. · The magnitude of the 4-velocity of every object through spacetime is c, except for photons, whose 4-velocity is not c through spacetime. Four-velocity vector of light - Physics Stack Exchange 4-momentum of photon - Physics Stack Exchange Photon frequency and four-velocity - Physics Stack Exchange Definition of four-velocity: why define it with proper time of the ... Другие результаты с сайта physics.stackexchange.com

In physics, in particular in special relativity and general relativity, a four-velocity is a four-vector in four-dimensional spacetime. Velocity · Components of the four-velocity · Magnitude

10 мая 2018 г. · The magnitude of the 4-velocity of every object through space time is c, except for photons, whose 4-velocity is undefined. Is the magnitude of four velocity always equal to speed of light c ... What will happen to the special theory of relativity if velocity of ... Другие результаты с сайта www.quora.com

15 нояб. 2015 г. · However, the photon does not have a well-defined "4-velocity", because its 4-momentum is null, so there is no such thing as a unit vector ... What is the four-momentum of a photon and its associated four ... The magnitude of a four velocity - Physics Forums What is the velocity of the photon through the fourth dimension ... Другие результаты с сайта www.physicsforums.com

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For a photon (massless particle), the speed is u = c so that γu is infinite. The definition of 4-velocity unfortunately doesn't make much sense in this case.

We must express Newton's laws of motion in terms of four- vectors so that they are frame invariant and consistent with Special Relativity.

17 янв. 2021 г. · ing the four-velocity of an object as the derivative of its position four-vector ... Pingback: Geodesic equation and four-velocity. Pingback: ...