Isaac Newton - (Biography + Contributions + Facts) - Science4Fun
The World's First Reflecting Telescope - YouTube
Reflecting telescopes - YouTube
Sir Isaac Newton's reflecting telescope, known also as the Newtonian telescope. It worked by concentrating light by reflection from a parabolic mirror, instead of by refraction through a lens. Newton (1642-1727) first
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Isaac Newton's Reflecting Telescope by Power And Syred, Nasa/science Photo Library
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121 Isaac Newton Telescope Photos and Premium High Res Pictures - Getty Images
Newtonian Reflecting Telescope (replica) | National Museum of American History
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