P1d Light and Lasers

You need to be able to:

• Describe how light has been historically used for communication
• Explain what total internal reflection is and how it is used in fibre optics (light and IR)
• Explain the type of light produced by lasers, and how they are used in CD players

2. Historical light signals
3. ...and morse code
4. TIR notes and animation
 
5. How a CD player works notes
6. 
7. Light and lasers quiz