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

这在刀鱼身体附近产生了电场。

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。

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，在青蛙腿上产生电压。

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，在游泳时会在其周围产生电场。

But that blockage can be cleared by applying an electric field of 1600 volts per centimeter, parallel to the chocolate's flow.

但是，管道堵塞可以通过1600伏特/厘米的电场来清除，与巧克力的电流相平行。

To make the glue unsticky, the researchers switch the direction of their system's electric field.

为了使胶水不粘， 研究人员改变了他们系统电场的方向。

That's just like an ideal parallel plate capacitor which has zero electric field outside of it!

这就像一个理想的平行板电容器，其外部电场为零！

The speed this wave moves across space is determined by how well those wiggling electric and magnetic fields can create each other.

这种波在太空中移动的速度是由这些摆动的电场和磁场相互产生的能力决定的。

Now plot the electric field, oscillating back and forth in the y-direction.

现在绘制在 y 方向来回振荡的电场。

These oscillations are electromagnetic waves, and they're made up of changing electric and magnetic fields that travel through space.

这些振荡是电磁波，它们包括改变穿过空间的电场和磁场。

We discussed electromagnetic waves and how changing electric and magnetic fields propagate through space.

我们讨论了电磁波以及电场和磁场如何在空间中变化。

Controlling the electric field on the sole of each shoe determines whether a climbing foot will stick — or let go.

控制每只鞋底的电场决定了攀登的脚是粘住还是松开。

This beast can get longer than three meters and find their prey by detecting the electric fields generated by other animals.

这种野兽可以长到三米以上，并通过检测其他动物产生的电场来寻找猎物。

The electric eel can also curl up so that the electric fields generated at each end of the electric organ overlap.

电鳗还可以蜷缩起来，使电器官两端产生的电场重叠。

Now we've got an equation to calculate the electric field generated by any point charge.

现在我们有一个方程来计算电场 任何点电荷的结果。

After all, if a changing magnetic flux produces an electric field, why is there not a complementary law saying the reverse?

毕竟，如果不断变化的磁通量会产生电场，为什么没有相反的互补定律呢？

Let's say we want to create an electric field where all positive test charges move uniformly in a single direction.

假设我们要生成一个所有人都在移动的字段 阳性测试定期向一个方向充电。

Before we add the electric field from the  equal magnitude, negatively charged plane, let's make the electric field from the positively  charged plane blue.

在我们添加来自等幅、带负电平面的电场之前，让我们先将来自带正电平面的电场设为蓝色。

So we construct the electric field as a series of lines moving from the positive plate to the negative one.

所以我们把场构造成一系列 线从正极板到负极板。

So, if you were standing away from the antenna, you would be able to measure an electric field and magnetic field that are both constantly changing.

所以，如果你站在远离天线的地方，你就能测量到不断变化的电场和磁场。