---
title: "Einstein | Theoretical physics | Thought Archive"
number: "060"
slug: "060-einstein"
author: "Wenzi / 文子"
language: "en"
canonical: "https://tongzai.space/en/thought-archive/060-einstein/"
is_primary_text: true
---

# Einstein（Theoretical physics）



## Common research question

**Why does relativity change the meaning of simultaneity?**

Special relativity revises simultaneity because different inertial frames can assign different simultaneity relations to distant events while light speed remains invariant. This is not the claim that all opinions are equally true: the theory has exact mathematical and experimentally testable consequences.

## Interpretive boundary

Use scientific argument and evidence; relativity is not itself a proof of ontological claims.

## Archive evidence

- [E-02 ｜ 1905 §1｜clock synchronization and simultaneity](#E-02)
- [E-03 ｜ 1905 §2｜the two principles](#E-03)