Telescope - Reflecting, Astronomy, Optics | Britannica
Isaac Newton's Reflecting Telescope by Power And Syred, Nasa/science Photo Library
Telescope - Reflecting, Astronomy, Optics | Britannica
How Many Great Minds Does It Take to Invent a Telescope? - Foundation for Economic Education
a Draw a ray diagram showing the formation of image by a reflecting telescope.b Write two advantages of a reflecting telescope over a refracting telescope.