Seeing our own world rotate

Robert P Crease

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Seeing our own world rotate

机译：看到我们自己的世界旋转

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The first Foucault's pendulum I ever saw was at the Franklin Institute in Philadelphia, the city where I was born. The pendulum hung in a stairwell. Its wire was attached to the ceiling four stories up, while its silver bob glided silently black and forth over a globe in the floor, with Philadelphia at dead centre. The plane of its oscillation slowly shifted clockwise at an unchanging rate throughout the day: 9.6° an hour. I'd state at it, trying to make myself see it was the floor and I that moved-as the sign informed me-and not the pendulum itself. It troubled me that I was never sure I succeeded.

机译：我见过的第一个福柯钟摆是在我出生的城市费城的富兰克林学院进行的。钟摆挂在楼梯间里。它的金属丝固定在天花板上四层楼上，而银色的鲍勃在地上的一个地球仪上默默地来回滑动，费城处于死角。它的振荡平面全天以不变的速度缓慢地顺时针移动：每小时9.6°。我要指出这一点，试图让自己看到地板，而我移动了（正如标志告诉我的那样），而不是摆锤本身。我不确定自己是否成功，这使我感到困扰。

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《Physics world》 |2003年第7期|共1页
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Robert P Crease;
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Seeing our own world rotate

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