# Week 15

**Read:**The principle of relativity (ASGv2 Chap. 29) and The absolute speed of light (ASGv2 Chap. 30).

**Key topics:**principle of relativity, speed of light postulate, relativistic time dilation and length contraction,

**Quiz:**covering week 14.

Homework:

Homework:

- Inertial coordinates (Ex. 29.1),
- Simultaneity (Ex. 30.1),
- Relativistic time dilation (Ex. 30.2),
- Relativistic length contraction (Ex. 30.3)

**Lab:**Relativity laboratory (Ex. 29.2). The following four videos walk you through the lab.

**Three videos on Einstein's principle of relativity.**

Chapter 29:

Chapter 29:

**Chapter 30:**Eleven videos on Newton's theory of relativity.