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

是个家的玩具可以演示角动量还有动能和势能。

Even before World War Two, scientists had known about the potential energy inside uranium, the heaviest metal in the periodic table a diagram which groups the chemical elements into rows and columns according to their atomic number and symbol.

甚至在第二次世界大战之前，科家们就已经知道铀内部的势能。铀是元素周期表中最重的金属，元素周期表是根据原子序数和原子符号将化元素分成行和列的图表。

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

当体处一定高度时，它储存了势能。

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

对，我认为主要借助重力势能。

The three levels of physics are different based on fulcrum, potential force, and resistance force.

的三个层次根据支点、势能和阻力的不同而不同。

Due to the intense gravitational field of the black hole, these particles convert their potential energy to kinetic energy as they inch closer to the event horizon.

由黑洞强大的引力场，这些颗粒在一寸寸接近事件视界时，将它们的势能转化成了动能。

The negative comes from the fact that if you let the force push you along your potential energy decreases, while if you fight in opposition to the force your potential energy increases.

你的势能就会降低而当你反抗该力而行 你的势能会增加。

Each possesses its own density of chemical potential energy, or caloric value, like for example, 1 gram of carbohydrate contains about 4 calories, while a gram of fat contains about 9 calories.

每一种都有自己的化势能密度或卡路里值，例如，一克碳水化含有大约 4 卡路里，而一克脂肪含有大约 9 卡路里。

For this, we need the kinetic and potential energy for each, and we write them as a function of y and eta.

为此， 我们需要每个的动能和势能，并将它们写为 y 和 eta 的函数。

So, E from gravity is mass times gravity times height, which I get here to be 822 joules.

重力势能是质量乘重力乘高度，我这里得到的是 822 焦耳。

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

现在，我们可以计算她在这一点上的重力势能。

The amazing thing about your complicated, self-healing, blood-guzzling muscle tissues is that they turn chemical potential energy into mechanical energy, or movement, simply by doing two things — contracting and relaxing.

你复杂的，自愈的，耗血的肌肉组织的神奇之处在它们将化势能转化为机械能，或运动，仅仅通过做两件事情——收缩和放松。

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

科界面临的挑战是了解如何以一种可控的方式释放这种势能。

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块提升到空中，在那里它变成了势能。

Sometimes like instead of adding the potential, like having the lift hill, we'll put energy in like through some type of launch mechanism like a LIM or an LSM.

有时我们不通过提升坡道来增加势能，而是通过某种发射机制，如 LIM 或 LSM 来注入能量。

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能上，将其作为为电网储存可再生能源的解决方案。

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

你们可能还记得高中里的势能。

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

我们有动能、势能和摩擦力。

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

基本上就是把这个能量转换成所谓的势能。

But potential energy isn't the only possible solution.

但是势能并不是唯一可能的解。