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Published in:
1971 | OriginalPaper | Chapter
Measurement of Luminance
Author : H. A. E. Keitz
Published in: Light Calculations and Measurements
Publisher: Macmillan Education UK
Included in: Professional Book Archive
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Since luminance, among the photometric quantities, is the only one that can be perceived as such by the eye, only luminance can be measured directly by comparison with another luminance. We shall term this method the direct visual measurement of luminance, in contrast with the indirect methods in which luminance is measured with the aid of another quantity.