Answer: The light from an iron arc includes many different
Chapter 36, Problem 36.33(choose chapter or problem)
The light from an iron arc includes many different wavelengths. Two of these are at l = 587.9782 nm and l = 587.8002 nm. You wish to resolve these spectral lines in first order using a grating 1.20 cm in length. What minimum number of slits per centimeter must the grating have?
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