Fact 1: Aprism is used for refracting light.

Fact 2: Glass prisms and mirrors are used to mainipulate the light rays.

Given the two facts above, answer the question "what do prisms refract?" with the following options: 
- Slow.
 - wind
 - yes
 - Joules
 - ligt
 - energy
 - sand
 - waves


 

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