A light source blinks once per second in its own frame of reference. As you approach the blinking source, you observe the frequency of blinks to be
A)less than 1 Hz.
B)1 Hz.
C)more than 1 Hz.

Question

Quizplus · Accepted Answer

According to the principle of time dilation in special relativity, as an observer approaches a moving light source, the frequency of the light appears to increase. Therefore, as the observer approaches the blinking source, they will observe more than 1 blink per second.

A Light Source Blinks Once Per Second in Its Own