The visible spectrum of colors ranges from approximately 380 nm in wavelength at the violet end to 750 nm at the far red end.
a. What are the frequencies associated with these two wavelengths?
b. When light passes into glass, the speed of light is reduced to v = c/n where n is called the index of refraction. For many types of glass or plastic, n is approximately 1.5. What is the approximate speed of light in glass?
c. If the frequency of light does not change when light enters glass, the wavelength must change to account for the reduction in speed. What are the wavelengths for the two ends of the visible spectrum in glass?
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