The origins and early years of the Magnetic and Meteorological department at Greenwich Observatory, 1834-1848

Annals of Science
Lee T Macdonald

Abstract

As one of his first acts upon becoming Astronomer Royal in 1835, George Airy made moves to set up a new observatory at Greenwich to study the Earth's magnetic field. This paper uses Airy's correspondence to argue that, while members of the reform movement in British science were putting pressure on the Royal Observatory to branch out into geomagnetism and meteorology, Airy established the magnetic observatory on his own initiative, ahead of Alexander von Humboldt's request for British participation in the worldwide magnetic charting project that later became known as the 'Magnetic Crusade'. That the Greenwich magnetic observatory did not become operational until 1839 was due to a series of incidental factors that provide a case study in the technical and political obstacles to be overcome in building a new government observatory. Airy attached less importance to meteorology than he did to geomagnetism. In 1840, he set up a full programme of meteorological observations at Greenwich - and thus turned his magnetic observatory into the 'Magnetic and Meteorological department' - only as the price of foiling an attempt by Edward Sabine and others in the London scientific elite to found a rival magnetic and meteorological observatory....Continue Reading

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