A simple superluminal but not physical motion

TL;DR

This paper explores a superluminal unphysical motion to clarify the concept of simultaneity in special relativity and demonstrate the non-physical nature of superluminal speeds using Minkowski diagrams.

Contribution

It introduces a pedagogical example of superluminal motion to enhance understanding of special relativity's concepts.

Findings

Highlights the non-physical nature of superluminal speeds

Uses Minkowski diagrams to illustrate simultaneity issues

Provides educational insights into special relativity

Abstract

We discuss a superluminal unphysical motion which, we believe, has a high pedagogical potential. It highlights the physics behind the concept of simultaneity in special relativity and illustrates the non-physical character of superluminal speeds offering a rewarding exercise in handling the Minkowski space-time diagram.