Hello everyone, I came across the following when I was reviewing diffraction gratings: "The condition for maximum intensity is the same as that for a double slit. However, angular separation of the maxima is generally much greater because the slit spacing is so small for a diffraction grating." (http://hyperphysics.phy-astr.gsu.edu/hbase/phyopt/gratcal.html) I can't think of a reason for why this would be the case, unless I am completely misinterpreting what has been stated. I searched in my textbook for a more satisfying explanation but it does not even mention this particularity about diffraction gratings. Online sources have given short answers similar to hyperphysics' explanation. Any help is greatly appreciated!