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Biot , Jean-Baptiste , 1774-1862 , scientist Bessel , Friedrich Wilhelm , 1784-1846 , Prussian astronomer
Berzelius , Friherre Jöns Jacob , 1779-1848 , Swedish chemist
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Thomas Young was born, 1773; Made pioneering contribution to the understanding of light by demonstrating interference patterns, known as 'Young's fringes' (1800) which led to the Young-Fresnel undulatory theory. He also formulated an important measure of elasticity, known as 'Young's Modulus'. First to explain the accommodation of the eye; discovered the phemomenon of astigmatism; and proposed the three colour theory of vision which was later known as the Young-Hemholz theory, and was finally confirmed experimentally in 1959. Appointed to a professorship of natural philosphy at the Royal Institution (1801). His lectures at Royal Institution (1802-1803) were described by Joseph Larmor as "the greatest and most original of all general lecture courses". Undertook seminal work on the Rosetta Stone, deciphering the second type of Egyptian script on the stone, known as demotic, though the credit for finally reading the hieroglyphs belongs to Jean-Francois Champollion. A major scholar in ancient Greek, and a phenomenal linguist who coined the term 'Indo-European' for the language family which includes Greek and Sanscrit. Also a distinguished physician at St. George's Hospital, adviser to the Admiralty on shipbuilding, secretary of the Board of Longitude, and superintendent of the vital 'Nautical Almanac' from 1818 to 1829. Contributed many entries to the 'Encyclopaedia Britannica' (1816-1825). Physician to and inspector of calculations for the Palladian Insurance Company (1824-1829).