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Maybe you've noticed,

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but wires are really
important to us.

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We use them a lot.

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And so, I you just saw in
a cartoon with electrons.

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Here is a cartoon that I
thought was interesting that

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shows a wire-pulling setup.

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So, now this is--

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Die, reducing the diameter.

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That's a die.

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Further reduction can take
place using extra dies.

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The drawn wire is
finally wound on a spool.

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This transformation
elongates the wire.

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One meter of 5.5-millimeter wire
rod can be drawn to 30 meters

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with one millimeter diameter
or 484 meters with 0.25

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millimeters diameter.

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OK.

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Now, that is a cartoon, and
I think it's always good.

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When you see cartoons
like this, you don't know.

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Go look up what
the real deal is.

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What does it really
look like to draw wires?

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And I found it pretty cool.

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So this is an actual
wire-drawing plant,

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and this is what it looks like.

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Now, there's no audio
here, but I just

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wanted to show
you the magnitude.

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Those are huge towers
that are melting metals

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to give you this first rod,
and then it goes through one

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after the other.

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And look at it being pulled--

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being pulled in
at some diameter,

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and it comes out in
a different diameter.

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But I wanted to show you
the scope and size of this.

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This is just one of them.

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There's a person, and so
you get a sense of the size,

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and then you can
also see something--

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when you go visit
these factories,

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and I have these
factories, there's

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always a lot of this happening.

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Why?

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Things are getting really hot.

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When you're spinning things like
a wire at a very high velocity,

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things heat up, so you get
water all over the place.

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So there's water being
sprayed in factories

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all over the place, because
you've got to keep stuff cool,

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or there's water baths that
you run these things through.

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And then you've got
to think about, well,

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does this thing
interact with water?

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How does the water play a role?

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It all comes down
to the electrons.

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And once they've actually
drawn the wire out

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over this huge factory,
they can actually

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weave it back together.

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So I found this.

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This is the same factory.

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Now these things here
are doing the opposite.

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So these are huge drums,
about the size of a person,

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and each of these got
a wire that was drawn.

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And now, again, because
of the ductility,

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you can also move the
wires, play with the wires,

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and you can weave them together.

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You can weave them
right back together

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into a thread that looks
like that, which we all have

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seen I think many, many times.

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All of this processing, all
of this manufacturability,

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has to do with the electron sea.

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That's why we have wires

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OK.