Swings work by converting potential energy into kinetic energy, then kinetic energy back into potential energy, over and over again.

秋千的晃动是通过势能与动能的不停转换实现的。势能转换成动能，动能再转换成势能，如此循环。

youdao

And this rotational kinetic energy can then be, perhaps, converted into electricity or in other forms of energy.

这个旋转动能，可以，转换为电力，或者其他形式的能量。

youdao

Then it has kinetic energy.

之后它就有了动能。

youdao

So instead you'd have to maybe if you start with wavelength, go over there, and then figure out velocity and do something more like kinetic energy equals 1/2 n b squared to get there.

这时你要先从波长开始，到这，然后算出速度,然后像动能等于1/2nb平方得到这。

麻省理工公开课 - 化学原理课程节选

So if we say that l is just talking about our kinetic energy part, our rotational kinetic energy, and we know that electrons have potential energy, then it makes sense that l, in fact, can never go higher than n.

如果我们说，l仅仅是,描述动能项，我们的旋转动能，我们知道，电子有势能，所以可以理解，l不能比n高。

麻省理工公开课 - 化学原理课程节选

The battery, developed by Zhong Lin Wang and colleagues at the Georgia Institute of Technology, converts the kinetic energy from motion into chemical energy, which can then be used to power any device.

FORBES: Battery On Shoe Charges With Every Step

Until this new system was developed, capturing kinetic energy required converting mechanical energy into electricity, which would then be converted into chemical energy for long- or short-term storage.

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