Abstract
IN his recent communication1, Hopkinson suggests that the relationship between M, the magnitude of brightness sensations, and L, the corresponding physical luminance, is M = kL 0.3 for dark-adaptation conditions; and M = kL for light-adaptation conditions.
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HUNT, R. Light Energy and Brightness Sensation. Nature 179, 1026 (1957). https://doi.org/10.1038/1791026a0
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DOI: https://doi.org/10.1038/1791026a0
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