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物理的笑话,请解读One day in class, Richard Feynman was talking about

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物理的笑话,请解读
One day in class, Richard Feynman was talking about angular momentum. He descr
ibed rotation matrices and mentioned that they did not commute. He said that S
ir William Hamilton discovered noncommutivity one night when he was taking a w
alk in his garden with Lady Hamilton. As they sat down on a bench, there was a
moment of passion. It was then that he discovered that AB did not equal BA.
英语意思我懂
物理的笑话,请解读One day in class, Richard Feynman was talking about
一天,教师费曼正在讲解角动量.他正在描述他们不能交换.他这样描述“交换”的含义:一个先生和一个女士在公园里的事使这个先生明白了什么是不能交换,当他和他心上人边走边聊,当他们想坐在一个长凳上休息时,他们抑制不住,突然来了激情,在长凳上的动作证明了他们是不能交换的~
这是我自己想的,貌似未成年人读不懂,但是费曼就是这种讲课风格,可以看看下面的网页,介绍了费曼的基本情况.