An intense white light is emitted when an oxyhydrogen flame (a flame made from a mixture of hydrogen and oxygen gases, approximately 3000°C) is blown onto lime, causing it to become incandescent. An even more intense light can be obtained by using zirconite. It is also called Drummond light, as it was invented by T. Drummond in 1825. In 1837, this light was focused by a lens and used for the first time as a spotlight, which was a groundbreaking event in the history of theater. By the 1860s, it had become possible to realistically reproduce the light of the sun and moon, and it began to be used for stage lighting, replacing the dark footlights of the past. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
石灰に酸水素炎 (水素と酸素の混合ガスの炎。約 3000℃) を吹きつけて白熱させたときに発する強い白色光。ジルコン鉱を用いるとさらに強い光を得る。 1825年 T.ドラモンドが発明したのでドラモンド光ともいう。 37年,この光をレンズにより集光して照射し,初めてスポットライトとして用いたのは,演劇史上で画期的な出来事であった。 1860年代には太陽や月の光を写実的に実現できるようになり,さらに舞台照明にも使われるようになって,従来の暗いフットライトに取って代った。
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