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Collapse of matter into a black hole

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Comments (1) Please sign in or register to add comments
homuncilus
Sunday, 29 December 2019 09:51 AM

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"为量子引力做出最大贡献的科学家是约翰·惠勒(John Wheeler),一位横跨20世纪物理学的传奇人物。他是尼尔斯·玻尔在哥本哈根的学生兼合作者;是爱因斯坦移居到美国后的合作者;身为教师,他的学生中有像理查德·费曼这样的知名人物……惠勒始终身处20世纪物理学的核心。他在想象力上独具天赋,是他发明了“黑洞”这一术语,并使其流行起来。他的名字与早期关于如何思考量子时空的深入考察联系在一起,经常比数学还要直观。他吸取了布朗斯坦的经验,明白引力场的量子性质意味着在微小尺度上需要对空间概念进行修正。惠勒在寻找有助于构想这种量子空间的崭新观念,他把量子空间想象为一群重叠的几何物体,就像我们把电子看作电子云一样。 想象你正从非常高的地方看海:你会看到巨大辽阔的海洋,平坦蔚蓝的海面。现在你往下降了一些,更近地注视它,能开始看清风吹起的海浪。继续下降,你看见海浪散开,海平面是波涛汹涌的泡沫。这就是惠勒想象出的空间的样子。" 从《现实不似你所见》注释链接找过来的中国读者。2333