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The Coolgardie Safe is a low-tech food storage unit for cooling and prolonging the life of whatever edibles were kept within it. The Coolgardie Safe applies the basic principle of heat transfer which occurs during evaporation of water. It was named after the place where it was invented — the small mining town of Coolgardie, Western Australia, near Kalgoorlie-Boulder. ==History== Coolgardie was the site of a gold rush in the early 1890s, prior to the Kalgoorlie-Boulder gold rush. For the prospectors who had rushed here to find their fortune, one challenge was to extend the life of their perishable foods — hence the invention of the Coolgardie safe. The safe was invented in the late 1890s by Arthur Patrick McCormick, who used the same principle as explorers and travelers in the Outback used to cool their canvas water bags: when the canvas bag is wet the fibers expand and it holds water. Some water seeps out and evaporates. It is most effective when air continually moves past it, such as when in a moving vehicle or when exposed to a breeze. This technology is commonly thought to have been adopted by explorer and scientist Sir Thomas Livingstone Mitchell, who had observed the way some Aborigines used kangaroo skins to carry water.〔http://www.powerhousemuseum.com/collection/database/search_tags.php?tag=Food+safes〕 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「Coolgardie safe」の詳細全文を読む スポンサード リンク
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