EN104
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2 revisions | jasirs94 at Nov 20, 2016 03:53 AM | |
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104G106 great utility of such applications of number in giving a control over qualitative inductions. I have not found multiplications of such numbers useful, for example, in establishing the laws of such comparisons as the relative photometric value of two lights of different colors, where I need not say that it is one thing to ask what intensity of a light A, of fixed hue and chroma but variable luminosity best matches a light, B, that is altogether fixed, and quite another and independent question what photometric intensity of B, if this be made to vary, best matches | 104 |