Everything -- gold, silver, diamonds, particles -- everything accelerates the same way in a gravitational field, due to this remarkable fact.
所有东西,金,银,钻石,粒子,所有东西,在引力场作用下都以相同的方式加速,原因就是这个显著的事实
Gravity is one force that acts on a body without the source of the force actually touching it.
引力是一种受力物体收到了力的作用,但却没有接触施力物体的力
Newton finds out there's a force of gravity acting on everything.
牛顿发现所有的物体都受到引力作用
It plays a big role in gravitation, in the Coulomb interaction.
它在引力和库仑力中都起着重要的作用
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