| | | | | Wobbly Spin Reveals Mercury's Molten Core | | | Randolph E.Schmid;刘人恺 | | | 有生活经验的读者都知道,将鸡蛋在平滑的表面上旋转,能长时间转动的是熟鸡蛋,摇摇晃晃转不了几圈的则是生鸡蛋。这一厨房窍门竟被天文学家用来确定水星的内核是否为“水”。 【分类号】:H319.4 【DOI】:CNKI:ISSN:1006-5822.0.2007-06-004 【正文快照】: Researehers have eraeked a mystery at the eore of Mereury‘一and say there’5 molten finid inside the tiny planet.They did it by using the same triek as cooks who want to know if an egg 15 raw or hard-boiled. The finding helPs explain the unexpeeted diseovery several years ago that Mereury has a small magnetie field④. The diseovery of the magnetie field by the Mariner 10 spaeeeraft puzzled seientists,who believed that because of its small size the planet’5 eore had longa即solidified. Howe… | | | 推荐 CAJ下载 PDF下载 | | | CAJViewer7.0阅读器支持所有CNKI文件格式,AdobeReader仅支持PDF格式 |
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