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Colour vision : being the Tyndall lectures delivered in 1894 at the Royal Institution (1895)

Abney, William de Wiveleslie, Sir, 1843-1920 · London : S. Low, Marston & Company · leaf 117

An illustration from Colour vision : being the Tyndall lectures delivered in 1894 at the Royal Institution, 1895, leaf 117 — Luminosity of a Feeble Spectrum. loi are reflected from glass mirrors Mi, M2 to apertures in opposite sides of the box, and from close to these … apertures by the right-angled prisms Pi P2, so as to fall on and cover S. Pods Ri, R2 are inserted in the

Color vision

Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.

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$An illustration from Opticks, or, A treatise of the reflexions, refractions, inflexions and colours of light ; Also two treatises of the species and magnitude of curvilinear figures (1704)$