Thomas Harriot
1560 - 2 July 1621
English astronomer, mathematician, ethnographer and translator
English astronomer, mathematician, ethnographer and translator. Sometimes credited with the introduction of the potato to Great Britain and
Ireland, Harriot's major contribution to British history was the creation of the first ever drawings of the celestial moon after peering through a
telescope in July 1609, before Galileo who is commonly thought of being the first.
After graduating from Oxford University, Harriot travelled to the Americas on expeditions funded by Raleigh, and on his return he worked for the
9th Earl of Northumberland. At the Earl's house, he became a prolific mathematician and astronomer to whom the theory of refraction is
attributed.
Born in 1560 in Oxford, England, Thomas Harriot attended St Mary Hall, Oxford. His name appears in the school's registry that dates back from
1577. After his graduation from Oxford in 1580, Harriot was first hired by Sir Walter Raleigh as a mathematics tutor, was also involved in
designing Raleigh's ships and served as his accountant. During this time he also wrote a treatise on navigation prior to his expedition with
Raleigh.
As a scientific adviser during the voyage, Harriot was asked by Raleigh to find the most efficient way to stack cannon balls on the deck of the
ship. His ensuing theory about the close-packing of spheres shows a striking resemblance to atomism and modern atomic theory.
Halley's Comet in 1607 turned Harriot's attention towards astronomy. In early 1609 he bought a "Dutch trunke" telescope, invented in 1608, and
his observations were amongst the first uses of a telescope for astronomy. Harriot is now credited as the first astronomer to draw an astronomical
object after viewing it through a telescope, a map of the Moon on July 26, 1609 and also to observe sunspots in December 1610.
He also studied optics and refraction and discovered Snell's law 20 years before Snellius did, although, like so many of his works, this remained
unpublished.