Activity: The light clock
Now we come to the light clock. You will come to understand why a moving light clock must tick slowly and derive the Lorentz factor. Proper time will be defined and so will the concept of simultaneity. Look out for length contraction as a consequence of the constancy of the speed of light.
To access the entire contents of this site, you need to log in or subscribe to it.
Alternatively, you can request a one month free trial.