英语词汇“Gregorian telescope”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

Gregorian telescope

/ɡrɪˈɡɔːrɪən

noun

An early reflecting telescope in which light reflected from a concave elliptical secondary mirror passes through a hole in the primary mirror. It was rendered obsolete by the introduction of Newtonian and Cassegrain telescopes.Therefore, for certain applications, Gregorian telescopes have desirable advantages over other telescope designs....

There are two different classes of two-mirror telescopes: Cassegrain telescopes and Gregorian telescopes.
He subsequently became the most successful London manufacturer of Gregorian telescopes, which were named after their original inventor.

Origin

Mid 18th century: named after James Gregory (1638–75), the Scottish mathematician who invented it.

单词	Gregorian telescope
释义	Gregorian telescope /ɡrɪˈɡɔːrɪən / noun An early reflecting telescope in which light reflected from a concave elliptical secondary mirror passes through a hole in the primary mirror. It was rendered obsolete by the introduction of Newtonian and Cassegrain telescopes.Therefore, for certain applications, Gregorian telescopes have desirable advantages over other telescope designs.... There are two different classes of two-mirror telescopes: Cassegrain telescopes and Gregorian telescopes. He subsequently became the most successful London manufacturer of Gregorian telescopes, which were named after their original inventor. Origin Mid 18th century: named after James Gregory (1638–75), the Scottish mathematician who invented it.
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