. Carnegie Institution of Washington publication. JL or 23 In case of a single grating cr/2 = 02=0 N = cos2 0 2 sin. 24 COS (7= 2 COS2 6—1 AP = cos 0 cos2 0 a result which may be reduced more easily from figure 24. Hence, the angular distance apart of the fringes would be (AP = X) X D cos 0 de= tan 0 4JV if D is the grating space. To find the part of the spectrum (d\) occupied by a fringe in the case postulated, since sin 0 = X/D, de d\ _D_ cos 6~ D cos2 0~ 4A/T. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - colorat
. Carnegie Institution of Washington publication. JL or 23 In case of a single grating cr/2 = 02=0 N = cos2 0 2 sin. 24 COS (7= 2 COS2 6—1 AP = cos 0 cos2 0 a result which may be reduced more easily from figure 24. Hence, the angular distance apart of the fringes would be (AP = X) X D cos 0 de= tan 0 4JV if D is the grating space. To find the part of the spectrum (d\) occupied by a fringe in the case postulated, since sin 0 = X/D, de d\ _D_ cos 6~ D cos2 0~ 4A/T. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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