Henry Cavendish

Died aged c. 79

Henry Cavendish FRS (/ˈkævəndɪʃ/ KAV-ən-dish; 10 October 1731 – 24 February 1810) was an English natural philosopher and scientist who was an important experimental and theoretical chemist and physicist. He is noted for his discovery of hydrogen, which he termed "inflammable air". He described the density of inflammable air, which formed water on combustion, in a 1766 paper, On Factitious Airs. Antoine Lavoisier later reproduced Cavendish's experiment and gave the element its name. A shy man, Cavendish was distinguished for great accuracy and precision in his researches into the composition of atmospheric air, the properties of different gases, the synthesis of water, the law governing electrical attraction and repulsion, a mechanical theory of heat, and calculations of the density (and hence the mass) of the Earth. His experiment to measure the density of the Earth (which, in turn, allows the gravitational constant to be calculated) has come to be known as the Cavendish experiment.

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Commemorated on 2 plaques

Hon ble Henry Cavendish natural philosopher lived here born 1731 died 1810

11 Bedford Square, London, United Kingdom where they lived

Revd John Michell BD. FRS 1724-1793 geologist and astronomer. Rector of Thornhill 1767 - 1793. He experimented on magnetism and astronomy, also making a Torsion balance to weigh the world. His visitors here included Henry Cavendish, William Herschel, Joseph Priestley and John Smeaton.

Thornhill Parish Church, Church Ln, Thornhill, Dewsbury, United Kingdom where they visited