How to pronounce“slinky”in English

I've backed a desktop slinky treadmill, which does exactly that forever and ever.

He's been using an old slinky to slice his bananas.

There's just like a slinky apparatus to make the skirt go up and down and swirl around.

And we can represent these parts with slinkys.

But since in this setup both slinkys are tied together, they're under the same tension.

Let's recreate Smith's signal by shaking a slinky up and down.

That's because how the wave actually travels through the slinky depends on two properties: how tightly the slinky is stretched, and this mass per unit length.

It’s sort of like what happens when you pull a Slinky out on a flat surface from both ends, and push on one side.

Now, so far we've used just one slinky, with one set of properties, to show how waves travel.

And there's two ways you could make a wave with the slinky.

First, we're gonna try two very different slinkys.

But when I increase the frequency to the point where the wave becomes shorter than the slinky itself, well, now when the wave reaches the fixed end,

And you can picture them if you imagine kind of holding a slinky in your hands.

So you might think Smith could do the same thing, except instead of matching slinkys, he had to match his transmission line to his antenna.

Some of it reflects, just like what we saw with the slinkys.

See, if we start out with a long wavelength, the signal barely changes during the time it takes to travel down the slinky.

If we can match this property, it's like the discontinuity is gone and it's just one slinky again.

Well, the mass per unit length decides how easy it is for a wave to travel through our slinky.

They move through rock more slowly, and they shear the particles side to side, or up and down, sort of like if I jiggle the Slinky like this.

Literally, one of the first ideas we had was, it seems like it should be able to flow like a Slinky.

Since both the antenna and the transmission line have their own electrical properties, we can model Smith's whole system by tying two slinkys together.