“telescope”的概念、定义、翻译、参考文献-科学参考

telescope

Physics

An instrument that collects radiation from a distant object in order to produce an image of it or enable the radiation to be analysed. See Telescopes, Optical Astronomical (Feature).

Astronomy

An optical instrument that collects light from faint and distant objects and magnifies their images. Telescopes have an objective lens or mirror which gathers light and focuses it at a focal plane. The resulting image may be observed with an eyepiece or recorded by a photographic emulsion, a charge-coupled device, or some other detector. In a refracting telescope the objective is a lens, and in a reflecting telescope it is a mirror. A telescope that uses both lenses and mirrors is called a catadioptric system. The larger the aperture of a telescope the more light it collects, making it possible to observe fainter stars and to see finer details. The highest magnification that can be used on a telescope of given aperture is restricted by the effects of diffraction. In practice, the finest detail visible with a telescope is set by the Dawes limit. Telescope apertures range from about 25 mm for the smallest refractors up to nearly 40 metres for the largest reflectors (the Extremely Large Telescope).

Space Exploration

An optical instrument that magnifies images of faint and distant objects. Telescopes in space have been used to study infrared, ultraviolet, and X-ray radiation that does not penetrate the atmosphere, but carries much information about the births, lives, and deaths of stars and galaxies. See also radio telescope.
http://galileo.rice.edu/science.html Early history of the telescope, documenting its first astronomical use by Italian astronomer Galileo and English astronomer Thomas Harriot. There are photographs of Galileo's and English physicist Isaac Newton's telescopes, and interesting drawings and engravings from old manuscripts.

单词	telescope
释义	telescope Physics An instrument that collects radiation from a distant object in order to produce an image of it or enable the radiation to be analysed. See Telescopes, Optical Astronomical (Feature). Astronomy An optical instrument that collects light from faint and distant objects and magnifies their images. Telescopes have an objective lens or mirror which gathers light and focuses it at a focal plane. The resulting image may be observed with an eyepiece or recorded by a photographic emulsion, a charge-coupled device, or some other detector. In a refracting telescope the objective is a lens, and in a reflecting telescope it is a mirror. A telescope that uses both lenses and mirrors is called a catadioptric system. The larger the aperture of a telescope the more light it collects, making it possible to observe fainter stars and to see finer details. The highest magnification that can be used on a telescope of given aperture is restricted by the effects of diffraction. In practice, the finest detail visible with a telescope is set by the Dawes limit. Telescope apertures range from about 25 mm for the smallest refractors up to nearly 40 metres for the largest reflectors (the Extremely Large Telescope). Space Exploration An optical instrument that magnifies images of faint and distant objects. Telescopes in space have been used to study infrared, ultraviolet, and X-ray radiation that does not penetrate the atmosphere, but carries much information about the births, lives, and deaths of stars and galaxies. See also radio telescope. http://galileo.rice.edu/science.html Early history of the telescope, documenting its first astronomical use by Italian astronomer Galileo and English astronomer Thomas Harriot. There are photographs of Galileo's and English physicist Isaac Newton's telescopes, and interesting drawings and engravings from old manuscripts.
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