Light consisting of two nearly equal wavelengths + and , where < < ,

Light consisting of two nearly equal wavelengths λ + Δλ and λ, where Δλ << λ, is incident on a diffraction grating. The slit separation of the grating is d.

a. Show that the angular separation of these two wavelengths in the mth order is

b. Sodium atoms emit light at 589.0 nm and 589.6 nm. What are the first-order and second-order angular separations (in degrees) of these two wavelengths for a 600 line/mm grating?

Transcribed Image Text:

Δλ Vidlm – X /m)*