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Studies in the photometry of lights of different colours [electronic resource] / spectral luminosity curves obtained by the equality of brightness photometer and the flicker photometer under similar conditions (1912)

Ives, Herbert Eugene, 1882-1953, Parsons, John Herbert, Sir, 1868-1957, donor, University College, London. Library Services · [London : s.n.] · leaf 83

An illustration from Studies in the photometry of lights of different colours [electronic resource] / spectral luminosity curves obtained by the equality of brightness photometer and the flicker photometer under similar conditions, 1912, leaf 83
Photometry of Lights of Different Colours. 847 The enormous area of the visual acuity curve is at once explainable as due to the chromatic aberration of the eye. Fig. 1. Simultaneously Obtained Spectral Luminosity Curves by four J Photometric Methods. o- — « v/suALACuirr \ K x EQUAL/ Tf OF… … ■SZ >S4- -$6 -S8 *6o .6Z 6<h 66/i It has been shown by Bell * and by Luckiesh f, in work published since the first o£ these papers was written, that the defining power of the eye is much greater for monochromatic light than for complex light of the same hue. It may thus * L. Bell, Elec. World,…

Ophthalmology · Eye · Light · Color blindness · Color vision · Photometry · Brightness perception · Color Vision Defects

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