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Emerald Spring : ウィキペディア英語版 | Emerald Spring
Emerald Spring is a hot spring located in Norris Geyser Basin of Yellowstone National Park. ==History==
Originally named ''Emerald Geyser'' by Philetus Norris, park superintendent (1877–1882) because of its color, the name was later officially changed to ''Emerald Spring'' by the U.S. Geological Survey in 1930. In 1892 Robert W. Wood, an American optical physicist, used the spring for a prank. He stealthy dissolved a pint of fluorescein in the pool to surprise several witnesses with unusually colorful water.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Emerald Spring」の詳細全文を読む
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