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Young, Thomas

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Dictionaries
1910 New Catholic Dictionary
• Young, Thomas
• Thomas Young
Encyclopedias
1911 Encyclopedia Britannica
• Thomas Young
The Nuttall Encyclopedia
• Young, Thomas

Physicist, born in Somersetshire, of Quaker parents; studied medicine at home and abroad; renounced Quakerism, and began practice in London in 1800; was next year appointed professor of Natural Philosophy in the Royal Institution, 1802; made Secretary of the Royal Society, and was afterwards nominated for other important appointments; his principal work is a "Course of Lectures on Natural Philosophy and the Mechanical Arts," published in 1807, in which he propounded the undulatory theory of light, and the principle of the interference of rays; the hieroglyphic inscriptions of Egypt occupied much of his attention, and he is credited with having anticipated Champollion in discovering the key to them (1773-1829).