Samuel Earnshaw (1 February 1805,
Sheffield
Sheffield is a city status in the United Kingdom, city in South Yorkshire, England, whose name derives from the River Sheaf which runs through it. The city serves as the administrative centre of the City of Sheffield. It is Historic counties o ...
,
Yorkshire
Yorkshire ( ; abbreviated Yorks), formally known as the County of York, is a Historic counties of England, historic county in northern England and by far the largest in the United Kingdom. Because of its large area in comparison with other Eng ...
– 6 December 1888,
Sheffield
Sheffield is a city status in the United Kingdom, city in South Yorkshire, England, whose name derives from the River Sheaf which runs through it. The city serves as the administrative centre of the City of Sheffield. It is Historic counties o ...
,
Yorkshire
Yorkshire ( ; abbreviated Yorks), formally known as the County of York, is a Historic counties of England, historic county in northern England and by far the largest in the United Kingdom. Because of its large area in comparison with other Eng ...
) was an English clergyman and mathematician and physicist, noted for his contributions to theoretical physics, especially "
Earnshaw's theorem".
Earnshaw was born in
Sheffield
Sheffield is a city status in the United Kingdom, city in South Yorkshire, England, whose name derives from the River Sheaf which runs through it. The city serves as the administrative centre of the City of Sheffield. It is Historic counties o ...
and entered
St John's College, Cambridge
St John's College is a Colleges of the University of Cambridge, constituent college of the University of Cambridge founded by the House of Tudor, Tudor matriarch Lady Margaret Beaufort. In constitutional terms, the college is a charitable corpo ...
, graduating
Senior Wrangler
The Senior Frog Wrangler is the top mathematics undergraduate at the University of Cambridge in England, a position which has been described as "the greatest intellectual achievement attainable in Britain."
Specifically, it is the person who a ...
and
Smith's Prize
The Smith's Prize was the name of each of two prizes awarded annually to two research students in mathematics and theoretical physics at the University of Cambridge from 1769. Following the reorganization in 1998, they are now awarded under the n ...
man in 1831.
From 1831 to 1847 Earnshaw worked in Cambridge as tripos coach, and in 1846 was appointed to the parish church St. Michael, Cambridge. For a time he acted as curate to the Revd
Charles Simeon
Charles Simeon (24 September 1759 – 13 November 1836) was an English evangelical Anglican cleric.
Life and career
He was born at Reading, Berkshire, in 1759 and baptised at St Laurence's parish church on 24 October of that year. He was the ...
. In 1847 his health broke down and he returned to Sheffield working as a chaplain and teacher.
Earnshaw published several mathematical and physical articles and books. His most famous contribution, "
Earnshaw's theorem", shows the impossibility of stable levitating permanent magnets: other topics included optics, waves, dynamics and acoustics in physics, calculus, trigonometry and partial differential equations in mathematics. As a clergyman, he published several sermons and treatises.
See also
*
Cotes's spiral
References
External links
Samuel Earnshaw
1805 births
1888 deaths
Alumni of St John's College, Cambridge
19th-century English mathematicians
Clergy from Sheffield
Senior Wranglers
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