1. The Problem of Synchronization
…it’s not as easy as you think!

2. Important ideas… Something’s gotta give:
Ether doesn’t exist
c is the same for all observers
Galilean Transformations can’t be right – if they are then Maxwell is “wrong”!
Giving up on Absolute space and time

3. A Gedanken Experiment
Imagine you rode along side a lightwave. What would you see?
If you ran at the speed of light and held a mirror in front of you, would you see your reflection?

4. Terms and Concepts… SR units – strange but useful!
Spacetime Diagrams and how to read them
World lines
The “Radar Method”

5. Sample Questions… R2B.2, R2S.2, R2S.7
…now on to R3 and the problem of time!