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Bending a Laser Beam [closed]
We can bend a Laser beam by varying the refraction coefficient of the air.
We can bend a Laser beam by dispersing into the air small particles that have the same effect on the Laser Beam and small ...
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Gain medium and the speed of light
I am currently studying optics, and when taking a closer look at refractive indices, I stumbled across gain mediums.
On Wikipedia it states that gain mediums can have a refractive index of $n<0$.
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