Henry Kater
| Henry Kater | |
|---|---|
 |
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| Born |
16 April 1777 Bristol |
| Died | 26 April 1835 (aged 58) |
| Nationality | English |
| Fields | Physics |
| Notable awards | Copley Medal (1817) |
Henry Kater (16 April 1777 – 26 April 1835) was an English physicist of German descent.
He was born at Bristol. At first he intended to study law; but he gave up the idea on his father's death in 1794. He entered the army, obtaining a commission in the 12th Regiment of Foot, then stationed in India, where he assisted William Lambton in the Great Trigonometric Survey. Failing health obliged him to return to England; and in 1808, then a lieutenant, he entered on a student career at the Senior Division of the new Royal Military College at High Wycombe. Shortly afterwards he was promoted to the rank of captain. In 1814 he retired on half-pay, and devoted the remainder of his life to scientific research.
His first major contribution to science was the comparison of the merits of the Cassegrainian and Gregorian telescopes; Kater determined the latter to be an inferior design.
His most substantial work was the invention of Kater's pendulum, enabling the strength of gravity to be determined, first at London and subsequently at various stations throughout the country. As the inventor of the floating collimator, Kater rendered a service to practical astronomy. He also published memoirs on British standards of length and mass; and in 1832 he published an account of his work on verifying the Russian standards of length. For these services to Russia he received in 1814 the decoration of the order of St. Anne; and the same year he was elected a Fellow of the Royal Society. In 1826, he was elected a foreign member of the Royal Swedish Academy of Sciences. Kater was elected a Foreign Honorary Member of the American Academy of Arts and Sciences in 1832.
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