...After a thunderstorm, these stone tools are often washed by rainwater and exposed to the ground, making them more visible to people, which is why they are thought to be associated with thunderstorms. In addition to these stone tools, there are also fulgurites, which are actually lumps of sand melted by the current of a lightning strike, and lightning tubes, which are cylindrical. [Matsumoto Nobuhiro]... *Some of the terminology explanations that mention "fulgurite" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…雷雨のあとではこれらの石器の類が雨水に洗われて地上に露出することが多く,人の目につきやすくなるので雷雨と関係づけて考えられるようになったと思われる。こういう石器類のほかに,実際に落雷の電流によって砂が溶けて塊になった雷石(フルグライトfulgurite)と,筒状になったライトニング・チューブlightning tubeがある。【松本 信広】。… ※「fulgurite」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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