Kinematics grounded on light

TL;DR

This paper constructs the geometry of space and time based on light and electromagnetic waves, providing a rigorous foundation for special relativity that enhances understanding and teaching of Einstein's theory.

Contribution

It offers a mathematically orthodox construction of spacetime grounded on light, making the principles of relativity more intuitive and accessible.

Findings

Relates spacetime geometry directly to electromagnetic waves

Simplifies understanding of special relativity's consequences

Provides pedagogical advantages for teaching physics

Abstract

The space-time of modern physics is tailored on light. We rigorously construct the basic entities needed by kinematics: geometry of the physical space and time, using as tool electromagnetic waves, and particularly light-rays. After such a mathematically orthodox construction, the special theory of relativity will result naturally. One will clearly understand and easily accept all those puzzling consequences that makes presently the special theory of relativity hard to digest. Such an approach is extremely rewarding in teaching the main ideas of Einstein's relativity theory for high-school and/or university students. Interesting speculations regarding the fundaments and future of physics are made.