It's a physics toy that demonstrates angular momentum, potential energy, and kinetic energy.

物理学家的玩具可以演示角动量还有动能和势能。

Basically converting this energy into what's called potential energy.

基本上就把能量转换成所谓的势能。

So potential energy you might kind of remember from high school physics.

你可能还记得高中物理里的势能。

Yeah, so it relies a lot on I suppose gravitational potential energy.

对，我认为主要借助于重力势能。

And now, we can compute her gravitational potential energy at this piece.

现在，我可以计算她在一点上的重力势能。

We have like kinetic energy, we have potential energy, friction.

我有动能、势能和摩擦力。

The challenge for science was learning how to unleash this potential energy in a controlled way.

科学界面临的挑战了解如何以一种可控的方式释放种势能。

When a thing is up at a height, it has stored potential energy.

当物体处于一定高度时，它储存了势能。

Which means change in potential energy of an object over time is negative velocity times force.

因此 一段时间内总能量的改变量因此 一段时间内总能量的改变量。

Then, when it's needed he blocks are released, spinning a turbine which converts the potential energy back into electricity.

然后，当需要的时候，被释放，旋转一涡轮机，将势能转换回电能。

I think this partly because potential energy has shown itself to be pretty efficient.

我认为部分因为势能已经证明了它非常有效的。

Both techniques are betting on potential energy as a solution for storing renewable energy for the grid.

两种技术都把赌注押在势能上，将其作为为电网储存可再生能源的解决方案。

It could kill us because it's using up all the chemical energy on earth and we contain some chemical potential energy.

它把我杀光因为它要用完地球上的所有化学能量了，而我体内蕴含着一潜在的化学能量。

Instead, renewable energy is used to lift heavy block of concrete up into the air where it becomes potential energy.

相反，可再生能源被用来将沉重的混凝土提升到空中，在那里它变成了势能。

But potential energy isn't the only possible solution.

但势能并不唯一可能的解。

This stores the energy by giving the water extra gravitational potential energy.

通过给水额外的重力势能来储存能量。

Now let’s go back to potential energy in capacitors.

现在让我回到电容器中的势能。

In this case our energy would be described as potential energy, right?

在种情况下，我的能量将被描述为势能，对吗？

Anyway, this is all just to say that the change in potential energy is negative F times the change in position.

负的F(力的大小)乘以位置变化量有负号因为 如果你让力一直推着你。

It has the potential energy to wipe out the planet.

它有着摧毁整地球的潜在能量。