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美科学家探测到引力波 印证爱因斯坦百年前预言
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美科学家探测到引力波 印证爱因斯坦百年前预言
February 12, 2016, 10:11:02 AM
#1
中新社华盛顿2月11日电 美国科研人员11日宣布,他们利用激光干涉引力波天文台(LIGO)于去年9月首次探测到引力波。这一发现印证了物理学大师爱因斯坦100年前的预言。
早在1915年,爱因斯坦在广义相对论的基础上提出了引力波的存在,并预言强引力场事件可产生引力波,比如黑洞合并、脉冲星自转以及超新星爆发等。
现代物理学认为,引力波是一种与电磁波不同的辐射,无法通过电磁辐射直接观测。引力波与宇宙中物质的相互作用是非常微弱的,因此可以传播至很远的宇宙空间。
为“捕获”引力波,美国国家自然科学基金会于上世纪90年代在路易斯安娜州利文斯顿和华盛顿州汉福德各建造了一个激光干涉引力波天文台(LIGO)。每个天文台都有两个长达4公里的测量臂,呈L型排列。来自加州理工学院、麻省理工学院等90多所高校的1000多名科学家参与LIGO的日常探测和研究。
Once a transaction has 6 confirmations, it is extremely unlikely that an attacker without at least 50% of the network's computation power would be able to reverse it.
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Re: 美科学家探测到引力波 印证爱因斯坦百年前预言
February 19, 2016, 09:40:50 AM
#2
引力波的发现可能会引发天文探索的改革,100年了,还是没人能够超越爱因斯坦的成就!
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Re: 美科学家探测到引力波 印证爱因斯坦百年前预言
March 03, 2016, 06:59:56 PM
#3
Quote from: 7425504 on February 19, 2016, 09:40:50 AM
引力波的发现可能会引发天文探索的改革,100年了,还是没人能够超越爱因斯坦的成就!
对我们的生活好像没有什么关系。
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