Question: a high resolution grating 2 6 0 mm wide, with 3 0 0 lines per mm at about 7 5 degrees in autocollimation has a
a high resolution grating mm wide, with lines per mm at about degrees in autocollimation has a resolving power of just about for nm Find its free spectral range. How do these values of R and delta lambda compare with those of a fabry perot
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