Refracting Telescopes - an overview | ScienceDirect Topics
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/GettyImages-960773850-85f50747071140b7bdc10eaf65fd55d8.jpg "The Basics of Telescopes")
The Basics of Telescopes
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Isaac Newton's reflecting telescope (replica) | Science Museum Group Collection
according to some accounts the first optical telescope was accidentally invented in the 1600s off 78% - medpharmres.com
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When was the Telescope Invented
Newton's reflector - Wikipedia
