Lorentz transformation
$$x_{r} = \frac{x-v\cdot t}{\sqrt {1-\frac{v^{2}}{c^{2}}}}$$
x_r - distance in moving system
x - distance in the rest frame
r - distance
v - speed (velocity)
t - time
c - speed of light
x - distance in the rest frame
r - distance
v - speed (velocity)
t - time
c - speed of light
Find
It is known that:
= 