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

是个物理学家的玩具可演示角动量还有动和势。

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

基本上就是把这个量转换成所谓的势。

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

你可还记得高中物理里的势。

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，我可计算她在这点上的重力势。

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.

科学界面临的挑战是了解如种可控的方式释放这种势。

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 段时间内总量的改变量因此 段时间内总量的改变量。

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，这些块被释放，旋转个涡轮机，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的。

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.

它把我杀光是因为它要用完地球上的所有化学量了，而我体内蕴含着些潜在的化学量。

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

相反，可再生源被用来将沉重的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.

但是势并不是唯可的解。

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

这通过给水额外的重力势来储存量。

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

现在让我回到电容器中的势。

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

在这种情况下，我的量将被描述为势，对吗？

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

负的F(力的大小)乘位置变化量有负号是因为 如果你让这个力直推着你。

It has the potential energy to wipe out the planet.

它有着摧毁整个地球的潜在量。