- Using light increases the speed of communication.
- Total internal reflection is when a wave stays inside a material by bouncing off the internal walls.
- Total internal reflection occurs when the angle of incidence is equal to or bigger than the critical angle for materials.
- If the angle of incidence is too small the light will leave the material rather than staying inside.
- Lasers produc an intense, narrow beam of light of a single colour.
Comments
No comments have yet been made