| In order to properly phase the two telescopes, adaptive optics on both telescopes removed the distortion caused by the Earth's atmosphere. |
| It was due to him that reflecting telescopes of sufficient accuracy and power to be useful in astronomy were developed. |
| Over the past 20 years sinus surgery has become a more precise and refined procedure due to the introduction of telescopes and CT scans. |
| Because he believed that refraction inevitably produced coloured fringes, he advocated reflecting telescopes, and made one. |
| Later on, great reflecting telescopes were used to probe the mysteries of the Universe. |
| Surprisingly, x rays do not penetrate Earth's atmosphere, so astronomers must place x-ray telescopes in space. |
