James Gregory, 17th century Scottish mathematician and astronomer. Artist: Unknown

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James Gregory, 17th century Scottish mathematician and astronomer. In 1663 Gregory (1638-1675) published Optica Promota describing his design for a reflecting telescope, an example of which was constructed by Robert Hooke. He was a supporter of the theories of Isaac Newton, with whom he corresponded.

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Photo credit: © Oxford Science Archive/Heritage Images / Alamy / Afripics
License: Licensed
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