The wavelength of red helium-neon laser light is 6328 nm


The wavelength of red helium-neon laser light is 632.8 nm. What is the wavelength of the laser light in the class that has an index of refraction of 1.5 in units of nm? Enter an integer. Round up or down correctly.

What is the speed of the laser light in the glass in units of 10^8 m/s?

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Physics: The wavelength of red helium-neon laser light is 6328 nm
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