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But others note that Jupiter's powerful gravitational field can just as easily send an object into Earth's path as push it deeper into space.
VOA: special.2009.08.25
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When the charge is applied, if the upper plate is negative, we would expect that the negative droplet would be repelled at a rate exceeding the gravitational fall.
当电荷起作用时，如果上边的板子是负电的，我们可以期待负电的液滴会,超过重力下降速度的速度被排斥。
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so first of all, Cal Tech has a very strong group in gravitational wave physics,
首先，加州理工引力波物理的师资很强，
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For much of the past century there were average global increases of 1.7 millimeters a year, but that rate doubled between 1993 and 2007.(мظ) Some regions, notably Western Australia have suffered more than others, partly,scientists say, because of how gravitational pull affects tides.
VOA: standard.2009.11.09
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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
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You know, if you want to measure the potential energy of something in a gravitational field, you have to define the zero somewhere, right, because it's arbitrary. You can set it anywhere you want. It's the same with enthalpy.
你知道，如果你想测量重力场,中某种东西的势能，你需要，在某处定义一个零点，对吧？,因为势能的值是任意的,你可以把它设定在。
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You might be winded doing it the second way, but when you get to the top and you are at the 60th story your gravitational potential is independent of how you got there.
对于走路你可能很抓狂，但你一旦到了顶层,你就是在第60层,你的重力势能,与你如何到达那里无关。
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We live in a gravitational field and that it affects our day to day life, and if you have hip pain or a hip that's diseased in some way, and you can't stand up against that gravitational field in the same way, that severely limits what you can do in the world.
我们生活在一个重力场中,这个场影响着我们的日常生活,如果你的髋关节疼痛,或者有其他髋关节疾病的话,就不能像平常一样,站在这个重力场中了,这严重限制了人的活动能力
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And actually like, this gravitational waves is one of the last proofs...
其实，这个引力波是最后的证据之一……
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Because positing them allows you explain things about the rotation of the star or the gravitational fluctuations, what have you.
因为这样假定能帮助你解释,诸如星体运行,引力波动,等现象
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Whether you take the elevator to the top of the Hancock Tower or whether you walk up the stairs, the change in gravitational potential is identical.
不管你是乘电梯,去大厦的顶层,或者是步行，重力势能的变化是相同的。
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By the way, that's a very remarkable property of the gravitational force-- the cancellation of the two ms.
顺便说一下,这是重力的一个重要属性,即可以消去等式两边的 m
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It is the same thing as gravitational energy.
就像重力势能。
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for he meant actually that we will never observe gravitational waves.
他的意思其实是我们永远无法观察引力波。
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Other is gravitational mass, which is the measure of how much you're attracted to the Earth.
另一个是引力质量,它可以用来衡量地球对物体引力的大小
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It's not talking about the gravitational pull of the Earth on an object.
没提到地球对物体的引力
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In fact, there's a property of gravitational fields anywhere, even in outer space, but there is some residual field between all the planets and all the stars in the universe, that the force on a body is proportional to the mass of the body.
实际上,这是任何地方的引力场都具备的属性,甚至是在外太空,在所有的行星和恒星之间,存在着某种剩余场,在这个场里作用在物体上的力,和物体的质量之间存在比例关系
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