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 65
Photometry of Lights of Different Colours. 363 absent under less extreme conditions. It may be much more marked under the doubled illumination which holds when two colours are matched in the flicker photometer. Fig. 6. … Critical Frequency-Illumination Relations for large and small Photometric Fields. I£ the latter supposition is correct it virtually means the adoption of the second explanation, namely that the critical frequency phenomena probably follow the straight line relationship, and that the flicker…
Ophthalmology · Eye · Light · Color blindness · Color vision · Photometry · Brightness perception · Color Vision Defects
Internet Archive · UCL Library Services, University College London (UCL) · Public domain (published before 1931). Free to use for anything.
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