![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 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](https://l450v.alamy.com/450v/2be0g89/sir-isaac-newtons-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-displayed-this-telescope-to-king-charles-ii-based-on-a-design-of-1668-it-had-a-focal-length-of-15cm-and-could-magnify-30-40-times-inadequate-mirrors-meant-that-the-newtonian-reflector-was-not-as-refined-as-contemporary-refracting-telescope-until-1722-when-james-haley-ground-a-quality-parabolic-mirror-this-drawing-was-published-in-the-philosophical-transactions-of-the-royal-2be0g89.jpg)
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
![Isacc Newton's first telescope with original mirror, circa 1668. It is the earliest known functional reflecting telescope. : r/interestingasfuck Isacc Newton's first telescope with original mirror, circa 1668. It is the earliest known functional reflecting telescope. : r/interestingasfuck](https://external-preview.redd.it/GpFKOYm0XY-AQRdnOGCH-9OqCD7WBhmF_Gj5K7FPeVg.jpg?auto=webp&s=69db56a7b9dad61e4f60aebddf841fb39272d54e)
Isacc Newton's first telescope with original mirror, circa 1668. It is the earliest known functional reflecting telescope. : r/interestingasfuck
![The Royal Society on Twitter: "Reflecting telescope, designed and made by Isaac Newton. He built his first reflecting telescope in 1668; this is his second model. The telescope consists of two tubes, The Royal Society on Twitter: "Reflecting telescope, designed and made by Isaac Newton. He built his first reflecting telescope in 1668; this is his second model. The telescope consists of two tubes,](https://pbs.twimg.com/media/EGWUya_X0AA0QCy.jpg)
The Royal Society on Twitter: "Reflecting telescope, designed and made by Isaac Newton. He built his first reflecting telescope in 1668; this is his second model. The telescope consists of two tubes,
![Sir Issac Newton's reflecting telescope (c.1668) : Astronomy, Natural Science, Science : r/Astronomy Sir Issac Newton's reflecting telescope (c.1668) : Astronomy, Natural Science, Science : r/Astronomy](https://preview.redd.it/isnadcbutjl01.jpg?auto=webp&s=e70d9519f29f3727bcc1fdaba18705a040a8ad08)