1668, according to Alfred Rupert Hall, in his book Isaac newton: adventurer in thought.
Isaac Newton invented his reflecting telescope in 1672.
Isaac Newton invented the reflecting telescope.
He invented the reflecting telescope in 1668 when he was 25
He invented the reflecting telescope.
Newton invented the reflecting telescope, among other items.
Isaac newton invented the reflecting telescope, and 3 laws of motion.
Isaac Newton in 1668 (courtesy of Wikipedia).
Isaac Newton did not invent the telescope. The telescope was actually invented by Hans Lippershey in 1608. Newton's contributions to science were in the fields of physics, mathematics, and astronomy, particularly with his laws of motion and the development of calculus.
Isaac newton.
Isaac Newton is credited with designing the first practical reflecting telescope in the 17th century, known as the Newtonian telescope. By using a curved mirror to reflect and focus light, Newton's design offered advantages over traditional refracting telescopes of the time.
He invented the reflecting telescope. Galileo was the first to use the telescope for studies of the heavens.
The reflective telescope was invented by Isaac Newton in 1668. He designed a reflecting telescope with a curved mirror that resolved some of the issues associated with the refracting telescopes of the time.