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JOHN TYNDALL

John Tyndall was an Irish physicist. He was born in 1820 at Leighlin Bridge, County Carlow and died in 1893. Educated at the local school he became an assistant in the ordnance survey of Ireland in 1839 and in 1842 was transferred to the English survey. In 1847 he accepted an invitation to teach mathematics and surveying at Queenwood College, Hampshire, and the following year went to the university of Marburg where he studied chemistry before publishing his papers on the Magneto-Optic Properties of Crystals in 1859, followed by works on heat, sound and the forms of water.
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