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Drawing of the reflecting telescope used by Isaac Newton (1642 - 1727), British scientist Stock Photo - Alamy
Isaac Newton's reflecting telescope (replica) | Science Museum Group Collection
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Engraving depicting a Newtonian telescope a type of reflecting telescope invented by the British scientist Sir Isaac Newton (1642–1727). Dated 19th Century Stock Photo - Alamy
Isaac Newton's reflecting telescope (replica) | Science Museum Group Collection
Reflecting telescope - Wikipedia
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