They work because certain materials, such as bismuth telluride, generate an electrical potential difference within themselves if one part is hotter than another.

它们之所以能起作用是因为一般的材料，比如碲化铋，如果其中一部分比另一部分热，内部就会产生电位差。

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Fortunately, a baby's hearing can now be tested painlessly through a device that detects electrical potential in the nerves that carry sound to the brain.

幸运的是，如今一种无痛设备已经可以通过探测神经元输送到大脑的电流信号来检测婴儿听力。

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All we need to do is add some fresh water and some salt water and some membranes, and the electrical potential that is there can provide that power.

只需要添加淡水，盐水和薄膜，薄膜上的电势就提供生产氢气所需的电能。

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Because there are ions moving back and forth, there's a current that flows and there's a electrical potential that's generated.

由于离子的进进出出,就产生了电流流动,并且形成了电势差

耶鲁公开课 - 生物医学工程探索课程节选

The flow of information is really a flow of electrical potential and it goes in one direction only.

信息流实际上就是电势差的流动,并且流动是单向性的

耶鲁公开课 - 生物医学工程探索课程节选

It turns out the electrical potential or electricity that you can measure on the surface of the body reflects things that are happening deeper inside like the beating of your heart.

人们已经证明在体表测量得到的电势能,或者电信号,能够表征,像心跳这样,身体较深处的变化

耶鲁公开课 - 生物医学工程探索课程节选

German carmaker BMW is recalling about 720, 000 vehicles, mostly in North America, over potential electrical problems that may cause unexpected stalling.

BBC: BMW logo

By doing some of the heavy logical lifting for you, littleBits hopes that potential electrical engineers and prototypers can focus on the goal rather than the minutia of laying out a breadboard or soldering resistors in place.

ENGADGET

But nothing actually travels the axon's length except a wave of electrical potential.

ECONOMIST: Andrew Huxley