Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun physics A generalization of velocity in
four-dimensional spacetime
Etymologies
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Examples
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Second, there are mistakes that are easy to spot — e.g. you can’t choose the four-velocity to be given by eq. (2), since it wouldn’t be correctly normalized in the metric given by eq.
How Are We to Make Progress With w? Mark 2005
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i = dxi / dτ = γ dxi / dt is the four-velocity of a particle.
Backreaction 2008
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