物体温度升高后就会辐射出热量，但由于原子的无规则热运动，在物体表面附近还会产生电场。

As an object heats up it radiates heat, but it also generates an electric field near its surface as a result of the random thermal motion of its atoms.

youdao

事实上，如果你观察带电粒子，在点电荷引起的电场中的运动，它也满足开普勒第二定律。

So, actually, if you look at motion of charged particles in an electric field caused by a point charged particle, it also satisfies Kepler's law, satisfies the same law.

youdao

还有方向，所以如果，你把粒子放在这下面，电场的方向相反，粒子会朝另一个方向运动。

So, if instead you put your particle somewhere down here on the electric field, or on the wave, the electric field will now be in the other direction so your particle will be pushed the other way.

youdao

So, if instead you put your particle somewhere down here on the electric field, or on the wave, the electric field will now be in the other direction so your particle will be pushed the other way.

还有方向，所以如果,你把粒子放在这下面，电场的方向相反,粒子会朝另一个方向运动。

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