Which Joe gave his name to ‘sloppy joes’? We look at five interesting sandwiches and their lexical origins.
A telescope in which a mirror is used to collect and focus light.
- ‘The Newtonian telescope is a type of reflecting telescope still in popular use.’
- ‘A 10 inch reflecting telescope provides common optics for infrared and electro-optical sensors.’
- ‘Inspired by Kepler's discoveries on light, James Gregory had begun to work on lenses and in Optica Promota he described the first practical reflecting telescope now called the Gregorian telescope.’
- ‘Unlike conventional reflecting telescopes, Herschel's telescope mirror is being made from a novel ceramic material called silicon carbide.’
- ‘Because he believed that refraction inevitably produced coloured fringes, he advocated reflecting telescopes, and made one.’
- ‘There are two main types of telescopes: refracting telescopes, which use lenses to gather the light and form an image; and reflecting telescopes, which use mirrors to accomplish the same purpose.’
- ‘He made his reflecting telescope entirely on his own, some parts of it with tools that he made specifically for the purpose.’
- ‘He built a reflecting telescope, polishing the mirror himself, and began observing the stars.’
- ‘The huge framework of the reflecting telescope loomed before me, the two-ton Pyrex glass mirror at the bottom, the tube pointing up and out through the aperture in the dome.’
- ‘He became so skilled a craftsman that he invented and built his own reflecting telescope, with tools that he made himself, casting the tube and grinding the mirror to a degree of accuracy that could not be matched by anyone else.’
- ‘The mammoth 19-inch reflecting telescope, one of the largest public telescopes in northern England, is housed in its own dome at the forest visitor centre.’
- ‘It was due to him that reflecting telescopes of sufficient accuracy and power to be useful in astronomy were developed.’
- ‘The school's Newtonian reflecting telescope gave hundreds of the pupils the chance to watch the transit live on a projected screen.’
- ‘Snap would orbit a three-mirror, 2-meter reflecting telescope in a high orbit over Earth's poles, circling the globe every week or 14 days.’
- ‘Isaac Newton proposed using a curved mirror, rather than a lens, to magnify the heavens, and reflecting telescopes are nowadays the norm.’
- ‘He developed a general rule for the focal length of lenses and described a reflecting telescope.’
- ‘Later on, great reflecting telescopes were used to probe the mysteries of the Universe.’
- ‘His development of the reflecting telescope made his instruments much smaller, and it was particularly useful for looking at distant bodies, such as Jupiter, that only reflected small amounts of light.’
- ‘In 1973 she built a reflecting telescope with a nine-inch mirror that she ground and polished herself.’
- ‘He therefore proposed and constructed a reflecting telescope.’
We take a look at several popular, though confusing, punctuation marks.
From Afghanistan to Zimbabwe, discover surprising and intriguing language facts from around the globe.
The definitions of ‘buddy’ and ‘bro’ in the OED have recently been revised. We explore their history and increase in popularity.