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Mount Bumstead : ウィキペディア英語版 | Mount Bumstead Mount Bumstead () is a large, isolated mountain, high, standing southeast of Otway Massif in the Grosvenor Mountains. It was discovered by R. Admiral Byrd on the Byrd Antarctic Expedition flight to the South Pole in November 1929 and named by him for Albert H. Bumstead, chief cartographer of the National Geographic Society at that time, and inventor of the sun compass, a device utilizing shadows of the sun to determine directions in areas where magnetic compasses are unreliable.〔 == References ==
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「Mount Bumstead」の詳細全文を読む
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