With a particular grating the sodium doublet (589.00 nm and 589.59 nm) is viewed in the
Chapter 36, Problem 61(choose chapter or problem)
With a particular grating the sodium doublet (589.00 nm and 589.59 nm) is viewed in the third order at 10 to the normal and is barely resolved. Find (a) the grating spacing and (b) the total width of the rulings.
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