On the constancy of light speed

TL;DR

This paper presents an intuitive visualization method for the constancy of light speed, demonstrating through thought experiments that time dilation effects are inherent consequences of the principle of relativity.

Contribution

It introduces a visual approach to understanding light speed constancy and links time dilation phenomena to the principle of relativity using mass-energy equivalence.

Findings

Velocity and gravitational time dilation are necessary consequences of relativity.

The speed of light is discussed in relation to different types of time dilation.

Abstract

Method given for intuitively visualizing constancy of light speed. Using mass-energy equivalence, we can show with the help of simple thought experiments, that velocity time dilation and gravitational time dilation are a necessary consequence of principle of relativity. Speed of light is discussed in the context of each kind of time dilation.