George Biddell Airy

The Astronomical Achievements of Sir George Biddell Airy

The Astronomical Achievements of Sir George Biddell Airy

On July 27, 1801, English mathematician, astronomer, and Astronomer Royal George Biddell Airy was born. His many achievements include work on planetary orbits, measuring the mean density of the Earth, a method of solution of two-dimensional problems in solid mechanics and, in his role as Astronomer Royal, establishing Greenwich as the location of the prime meridian. “It is not simply that a clear understanding is acquired of the movements of the great bodies which we regard as the system of the…
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Edward Walter Maunder and the Sunspots

Edward Walter Maunder and the Sunspots

On April 12, 1851, British astronomer Edward Walter Maunder was born. Maunder was the first to take the British Civil Service Commission examination for the post of photographic and spectroscopic assistant at the Royal Observatory, Greenwich. He is best remembered for his study of sunspots and the solar magnetic cycle that led to his identification of the period from 1645 to 1715 that is now known as the Maunder Minimum. “If we…
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William Whewell and the History of Science

William Whewell and the History of Science

On May 24, 1794, English polymath, scientist, Anglican priest, philosopher, theologian, and historian of science William Whewell was born. What is most often remarked about Whewell is the breadth of his endeavors. He published work in the disciplines of mechanics, physics, geology, astronomy, and economics, while also finding the time to compose poetry. One of Whewell’s greatest gifts to science was his wordsmithing. Amongst others, he also coined the word “Scientist”. “Every…
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James Challis and his failure to discover the planet Neptune

James Challis and his failure to discover the planet Neptune

On December 12, 1803, English clergyman, physicist and astronomer James Challis was born. Challis investigated a wide range of physical phenomena though made few lasting contributions outside astronomy. He is best remembered for his missed opportunity to discover the planet Neptune in 1846. Early Years James Challis was born in Braintree, Essex, UK, where his father, John Challis, was a stonemason. After attending Braintree School, the Revd Daniel Copsey’s school, Braintree, and…
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Sir Francis Beaufort and the Wind Scale

Sir Francis Beaufort and the Wind Scale

On May 27, 1774, Irish hydrographer and officer in the Royal Navy Sir Francis Beaufort was born. Beaufort was the creator of the Beaufort Scale for indicating wind force. In 1806, British Admiral Sir Francis Beaufort devised a simple scale that coastal observers could use to report the state of the sea to the Admiralty. Francis Beaufort – Early Years Francis Beaufort was born at Navan, County Meath, Ireland, the son of…
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Alexander Ross Clarke and the true Shape of the Earth

Alexander Ross Clarke and the true Shape of the Earth

On December 16, 1828, British geodesist Alexander Ross Clarke was born. He is best known for his calculation of the Principal Triangulation of Britain (1858), the calculation of the Figure of the Earth (1858, 1860, 1866, 1880) and one of the most important text books of Geodesy (1880). The figures from his second determination became a standard reference for U.S. geodesy for most of the twentieth century until satellites could improve accuracy.…
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