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Thomas Young and Hermann von Helmholtz assumed that the eye's retina consists of three different kinds of light receptors for red, green and blue
Thomas Young and Hermann von Helmholtz assumed that the eye's retina consists of three different kinds of light receptors for red, green and blue
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Portrait by Henry Perronet Briggs, 1822
Portrait by Henry Perronet Briggs, 1822
Plate from "Lectures" of 1802 (RI), pub. 1807
Plate from "Lectures" of 1802 (RI), pub. 1807
Volumes I and II of A Course of Lectures on Natural Philosophy and the Mechanical Arts (1807)
Volumes I and II of A Course of Lectures on Natural Philosophy and the Mechanical Arts (1807)
Title page to volume I of A Course of Lectures on Natural Philosophy and the Mechanical Arts (1807)
Title page to volume I of A Course of Lectures on Natural Philosophy and the Mechanical Arts (1807)