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The first reflecting telescope built by Sir Isaac Newton in 1668 is a landmark in the history of telescopes, as the first known successful reflecting telescope. He used a concave primary mirror and a flat diagonal secondary mirror. Radios, History Of Astronomy, Age Of Enlightenment, Isaac Newton, Ancient People, Telescopes, Ancient Civilizations, Writing Instruments, Physics
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The first reflecting telescope built by Sir Isaac Newton in 1668 is a landmark in the history of telescopes, as the first known successful reflecting telescope. He used a concave primary mirror and a flat diagonal secondary mirror.
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History Daily
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