...To eliminate this drawback, a reflecting telescope was developed that used a concave mirror to create a real image of a celestial body. James Gregory (1638-75) of Scotland is said to have designed the first practical telescope (presented in 1663). There are several theories about how telescopes were introduced to Japan, but the first one was apparently presented by a British envoy in 1613 (Keicho 18). *Some of the terminology that mentions "Gregory, J." is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…この欠点を除くために,天体の実像をつくるのに凹面鏡を利用したものが反射望遠鏡である。スコットランドのグレゴリーJames Gregory(1638‐75)が初めて実用的なものを設計した(1663発表)とされている。 日本への望遠鏡の伝来についてはいくつかの説があるが,1613年(慶長18)イギリスの使節が献上したのが最初らしい。… ※「Gregory,J.」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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