What inventions (or other wise) use light refraction?

  • Thread starter RockenNS42
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  • #1
RockenNS42
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We learning about light refraction in class the other day and I was just wondering what man made objects used it for and what man made light refraction is used for.
 

Answers and Replies

  • #2
atyy
Science Advisor
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Spectacles, microscopes, telescopes
 
  • #3
Bob_for_short
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All kind of optic devices. A simple lens, for example.

Bob.
 
  • #4
mikelepore
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A man on The Science Channel said something interesting. Noting that the ability of a lens to focus relies on the light changing speed when it crosses the boundary between two substances, and noting that the eye needs a lens, the man on TV pointed out -- and this is a close paraphrase: "If light traveled at the same speed in all materials, everyone would be blind."
 
  • #5
cragar
2,552
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prism , binocluors , beam splitter , gravitational lensing ( bending light around the sun for example) , camera , magnyfing glass , x-ray prisms , cerenkov radiation in a nuclear reactor . x-ray rainbows
 
  • #6
RockenNS42
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Just wanted to thank everyone who's replied so far, I really didn't know it was used to do so much!
 
  • #7
Dadface
2,495
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A man on The Science Channel said something interesting. Noting that the ability of a lens to focus relies on the light changing speed when it crosses the boundary between two substances, and noting that the eye needs a lens, the man on TV pointed out -- and this is a close paraphrase: "If light traveled at the same speed in all materials, everyone would be blind."

I wonder if somewhere in evolutioniary history some organisms have had eyes which work on the same principle as the pinhole camera.There is no refraction needed with these.
 
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