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Index of refraction and critical angle

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Sodium atoms in a Bose-Einstein condensate can slow the speed of light's energy
propagation to 70 km/hr. Find the index of refraction for this material, and
critical angle for total internal refraction if the atoms are otherwise in vacuum.

© BrainMass Inc. brainmass.com September 22, 2018, 7:01 am ad1c9bdddf - https://brainmass.com/physics/light-refraction/index-refraction-critical-angle-100357

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The speed of light c' in a medium with refraction index n ...

Solution Summary

The solution calculates the critical angle and index of refraction considering a Bose-Einstein condensate.