light and lasers
- Created by: itsjannah
- Created on: 17-05-15 13:07
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- laser and lights
- Used to read from the surface of a disic
- Surface CD is spitted.
- Used to read from the surface of a disic
- Pits represent digital signal
- Laser light is shone cd surface for the digital signal
- Critical angle
- Light travels from one material to another= refracted
- Critical angle
- Laser light is shone cd surface for the digital signal
- When the critical angle is 90 degrees
- if the angle is bigger the light is refracted
- Endoscopy allows doctors to see through someones body
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