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Proper time
The proper time τ is the time that passes on a certain world line.
Explanation
In relativistic theory, proper time of a particle is the time measured in the area of this particle, that is in the area where it is immobile.
Example 1
The Lorentz factor can be written as
where
t Time τ Proper time
HistoryThe German mathematician Hermann Minkowski introduced the notion of proper time in 1908. |