Except with light, the things doing the waving are electric and magnetic fields.

除开光，产生波动的是电场和磁场。

One of the dangers of electric fields is that they can be harmful to humans.

电场虽然会危害人体。

Even human cells have the ability to detect electric fields though not consciously.

即使是人类细胞也有能力探测电场, 尽管不是有意识的。

Electric current is produced when these electron-hole pairs are separated by an electric field.

当这些电子-空穴对被电场分开时，就会产生电流。

Scientists lacked the technology and tools to confirm an electric field and further explore it.

科学家缺乏确认电场并进一步探索它的技术和工具。

This creates an electric field around the knife fish's body.

这刀鱼身体附近产生了电场。

This relationship between electric fields and magnetic fields is a fundamental property of the universe.

电场和磁场之间的这种关系是宇宙的基本属。

This sounds in some ways like the electric fields that exist in and all around us.

这听起来就像我们周围存的电场。

Scientists are calling the third energy field the " ambipolar electric field."

科学家称第三种能量场为“双极电场”。

And all the water is doing is falling, but it's being pulled towards the electric field.

水流还是下落，方向却偏向电场。

Some discriminate between individual compounds by observing how the compounds move through a set of electric fields.

有些人通过观察化合物如何通过一组电场来区分各个化合物。

A changing electric field produces a changing magnetic field, which produces a changing electric field, and so on.

变化的电场产生变化的磁场，磁场产生变化的电场，以此类推。

So, he showed that the lightning radiates an electric field which produces a voltage on the frog legs.

他证明了闪电能辐射出一个电场，青蛙腿上产生电压。

And some fish, like the knife fish, generate an electric field around its body when it's swimming around.

有一些鱼，例如刀鱼，游泳时会其周围产生电场。

There's a lot more going on, especially the creation of electric fields and sharks have an incredible electro-reception sense.

还有很多事情要做，尤其是电场的产生，鲨鱼有一种令人难以置信的接收电流的感觉。

You can think of a light wave as being made of both an electric field and a magnetic field.

你可以把光波想象成由电场和磁场组成。

Scientists believe the ambipolar electric field counteracts some of the effects of gravity.

科学家认为，双极电场抵消了重力的一些影响。

In the darkness, these electric fish hunt by detecting distortions in the electric field they create around their bodies.

这些鱼用电黑暗中捕猎，它们身体周围形成电场，并感知其变化。

They have great force within the electric field, great attractions.

它们电场域内具有巨大的作用力、巨大的吸引力。

Scientists had theorized this electric field began at around 250 kilometers high.

科学家们推测，这个电场始于大约250公里高的地方。