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收录时间:2018-10-10 16:18

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一千年前的全日食记载也有迹可循

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  More than 900 years ago,the Pueblo people were thriving in New Mexico’s Chaco Canyon.While they were there,the region experienced what the whole country is looking forward to on August 21st:a total solar eclipse.Theirs took place in the year 1097-and they may have left a record of the event.
 
  900多年前,普韦布洛人在新墨西哥州查科峡谷过着繁荣昌盛的日子。那时在查科峡谷的人们也阅历了相似现在整个美国都在翘首以盼的8月21日的日全食。那次日全食发作在1097年,普韦布洛人可能留下了日全食的记载。
 
  I spotted this very peculiar petroglyph,which was a round object.
 
  “我发现了一个十分共同的岩石雕琢,上面是一个圆形物体。”
 
  Kim Malville is a retired Solar Astronomer from the University of Colorado Boulder.In 1992,he and colleagues were leading a field course in Chaco Canyon when he noticed a unique carving on the south side of a rock.
 
  金.马勒维尔是科罗拉多大学博尔德分校一位已退休的太阳天文学家。1992年,他和搭档在查科峡谷区域进行实地考察时,他注意到一块石岩的南侧有一个共同的雕琢。
 
  ...which was a round object with loops coming out of it,and it struck me as maybe this was an image of the sun with the corona in a very active state.And maybe at that time,there is what is known as a coronal mass ejection.
 
  “那是一个圆形物体,周围有圆环,这让我感到震动,由于这可能是太阳日冕处于十分活泼状况时的图画。或许其时发作了日冕物质抛射。”
 
  That’s when a giant cloud of plasma spirals off the sun’s surface because of a solar flare."It was somewhat foolhardy I suppose,on our part to suggest a particular explanation for it."But Malville knew that he had a testable hypothesis.
 
  日冕物质抛射是在太阳耀斑的效果下,巨型等离子云盘旋转逃脱太阳外表的现象。“咱们对岩石雕琢进行了详细解说,不过这个解说也过于果断,咱们需求切当的依据来证明”。不过,马勒维尔理解这确实是一个有待于证明的假定。
 
  Astronomers knew that the region had a total solar eclipse on July 11,1097.During the brief darkness,the sun’s corona would have been visible.Solar activity increases and decreases on a roughly 11-year cycle,so Malville used various historic records to find out what was happening in 1097.
 
  天文学家都知道查科峡谷在1907年7月11日发作了日全食。在那时间短的漆黑期间,太阳日冕应该可见。太阳活动的增减周期约为11年,因而,马勒维尔使用各种历史记载来查验1097年究竟发作了什么。
 
  And all of these indicated that in 1097,the sun was indeed in a state of very high activity and thus,we couldn’t prove that this was actually an image of the corona,but we could not falsify our hypothesis.
 
  “一切记载都标明,1097年太阳确实处于十分活泼的状况,但咱们无法就此证明岩石上的形象就是日冕,可是咱们也不能容易否定自己的假定。”
 
  In another portion of Chaco Canyon,a pictograph high on an overhang has been interpreted as marking a supernova explosion in 1054.Below that,a pictograph may mark the sighting of Hailey’s Comet in 1066.
 
  在查科峡谷另一处,山崖高处的象形文字经翻译后,发现是记载1054年发作的超新星爆炸事件。其下方的象形文字则可能记载的是1066年哈雷彗星通过地球的现象。
 
  And all three of them may have played a role in intensifying people’s interest in the heavens and looking at the heavens very carefully.
 
  “这三幅岩画可能在进步人们对天空的爱好方面发挥了必定效果,让人们更细心地调查天空。”
 
  Which is exactly what millions of current residents will be doing during this summer’s solar eclipse over North America.
 
  而这正是今年夏天北美洲日全食期间,数百万名居民会做的事。
 
  Thanks for listening for Scientific American-60-Second Science Science.I’m Emily Schwing.
 
  谢谢我们收听科学美国人-60秒科学。我是埃米莉.施温。
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