All Questions
3
questions
1
vote
1
answer
121
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Is it possible to have an optical version of a greenhouse? With optical fibers?
Optical fibers transport light within them using internal reflection, but the light only enters from one end of the fiber. Is it possible to somehow have light entering from the sides of the fiber (...
- 325
0
votes
0
answers
90
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What are the factors affecting transparency and color of a substance [duplicate]
What is the reason behind visual properties like color and transparency of different substances? I have always heard that the structure of the substance is responsible for these properties. I always ...
- 302
7
votes
2
answers
1k
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Slowing down light in an opaque crystal for a whole minute
I just read about a team of physicists at the University of Darmstadt, Germany, that managed to completely slow down a beam of light that traveled through an opaque crystal (article here).
How is it ...
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