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

是个物理学家玩具可以演示角动有动和势。

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

基本上就是把这个转换成所谓势。

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

你可记得高中物理里势。

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

对，我认为主要借助于重力势。

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

现在，我可以计算她在这一点上重力势。

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

我有动、势和摩擦力。

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

科学界面临挑战是了解如何以一种可控方式释放这种势。

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。

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

因此 一段时间内总改变因此 一段时间内总改变。

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

然后，当需要时候，这些块被释放，旋转一个涡轮机，将势转换回电。

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

我认为这部分是因为势已经证明了它是非常有效。

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

这两种技术都把赌注押在势上，将其作为为电网储存可再生源解决方案。

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

它把我杀光是因为它要用完地球上所有化学了，而我体内蕴含着一些潜在化学。

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

相反，可再生源被用来将沉重混凝土块提升到空中，在那里它变成了势。

But potential energy isn't the only possible solution.

但是势并不是唯一可解。

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

这通过给水额外重力势来储存。

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

现在让我回到电容器中势。

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

在这种情况下，我将被描述为势，对吗？

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

负F(力大小)乘以位置变化有负号是因为 如果你让这个力一直推着你。

It has the potential energy to wipe out the planet.

它有着摧毁整个地球潜在。