On the theory of flat spacetime

TL;DR

This paper presents a geometric approach to flat spacetime that does not rely on the properties of light, simplifying the understanding of special relativity as a four-dimensional Euclidean space.

Contribution

It introduces a geometric framework for spacetime that removes the necessity of light properties, offering a simplified perspective on special relativity.

Findings

Spacetime can be modeled as a four-dimensional Euclidean space.

Properties of light are not essential to describe spacetime.

A geometric viewpoint simplifies special relativity concepts.

Abstract

Special relativity turns out to be more than coordinate transformations in which the constancy of the speed of light plays the central role between two inertial reference frames. Special relativity, in essence, is a theory of four-dimensional flat spacetime. Euclidian space spans three of the spacetime's dimensions and time spans the fourth. Properties of light may not be needed to describe spacetime, which exists independently of light. The article shows that a theory of spacetime can be constructed from a geometric viewpoint in which the speed of light does not play any role. Moreover postulating four-dimensional geometry significantly simplifies the concept of special relativity.