Lights (physics)

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Across
  1. 2. The material in which a wave travels through, such as air, water, or glass.
  2. 3. The bending of light as it passes from one material to another at an angle.
  3. 5. A measure of how much a material refracts or slows down light.
  4. 6. The angle between a reflected light ray and the normal to a surface.
  5. 8. An imaginary line that is perpendicular to the surface a wave is traveling through, used as a reference for measuring angles.
  6. 9. Allowing some light to pass through but scattering it in different directions.
Down
  1. 1. The angle between an incoming light ray and the normal to a surface.
  2. 4. The bouncing back of light rays when they hit a surface that does not allow them to pass through.
  3. 7. Allowing some light to pass through but scattering it in different directions.