Q: The grating equation tells you at what angles different colors of light will appear: d sin θ = mλ(adsbygoogle = window.adsbygoogle || []).push({});

where d is the separation between the lines on the grating,

m is an integer (i.e., m = 0, ±1, ±2, ±3, etc.) known as the diffraction order number,

λ is the wavelength (with the same length units as d), and

θ is the angle at which light with wavelength λ is diffracted.

Make a sketch based on the figure below to show a narrow parallel beam of white light shining onto a grating with line separation d = 1150 nm. Show the angles for red and blue light for m = 0, +1, and –1 by drawing them in appropriate colors

I am confused on how to start this problem. Suggestions on starting points are appreciated.

Thanks.

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# Light beam question

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