We are open Tuesdays to Fridays 10am-5pm and Saturdays 10am-4pm. Public tours Wednesdays 1pm-4pm.
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Tredgold’s The steam engine (1838)

Thomas Tredgold (1788-1829) was a self-taught engineer. He trained as an apprentice cabinetmaker in Durham and then in Scotland before moving to London to work at his uncle’s firm of […]

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Joseph de Mendoza y Ríos (1761–1816) and the ‘Longitude Problem’

Successful sea navigation relies on being able to determine latitude (how far north or south you are) and longitude (how far east or west). When the Greenwich Royal Observatory was founded on 22 June 1675, sailors were able to measure latitude at sea by observing the altitude of the sun at midday, but once out of sight of land they had no easy means of determining longitude.

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