Name: 求解X - Suchitra Sebastian - 新一代超導體 (Solve for X - Suchitra Sebastian - A New Generation of Superconductors)
Uploaded: 2021-01-14T04:59:09.000Z
Duration: 15 min 17 s
Description: 【看影片學英語】數萬部 YouTube 影片，搭配英漢字典即點即查，輕鬆掌握單字發音與用法，長久累積看電影不必再看字幕。

going to talk to you about the power of new materials

to a category of materials known as superconductors which

have the potential to transform the energy landscape.

You can see this is concentrated in urban areas,

whereas energy actually needs to be transported

from over the entire globe just to reach these areas.

And let's talk about electricity in particular,

as a fraction of the total energy consumed.

And renewables are an excellent source of electricity.

from where urban areas of consumption are.

So looking forward, electricity infrastructure

And it's going to be dominated by issues of transport

We need to transport electricity now thousands

because where renewable sources are peaked-- for example, when

the sun shines the strongest or when the wind blows

Now, these two, electricity transportation and storage,

these are just a couple of the applications

So these materials transport electricity without any loss.

So if you took a ring made of superconducting wire

And so the image on the left shows a prototype

to be used in Germany that's going to be a kilometer long,

and it's going to be underground and transport power.

And so superconducting cables have natural applications

in power transmission given there's zero loss, particularly

for long distances, for dense urban areas,

And DC technology in particular is making these now viable.

The picture you see on the right is perhaps

one of the best known examples of a giant superconducting

And this is one of the other applications, superconducting

you can convert electricity into magnetic energy

for gearless and motors, for example, in wind turbines.

And now we're going to do the much talked about cool demo.

So I'm going to show you a superconductor in action.

So what you see here is a track made of magnetic material.

So they're rails made of magnetic material.

is one is the amazing quantum properties of superconductors

that make them not only conduct electricity with no loss

So what I have here is a puck of superconducting material.

And so I'm going to position this over the rail.

And actually, it started going without my doing anything.

So you can see it levitate over the track.

What we're going to try to do is also turn the rail upside down

underneath the rail, which would be even cooler.

So what I'm going to now do is take a very similar

superconducting puck and position it now under the rail.

You can see it fly without any dissipation,

except for primarily air friction, underneath the rail.

So what this is due to is because of persistent currents

being set up on the surface of the superconductor that

And so this is one of the most dramatic consequences

And I told you about all their amazing applications.

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求解X - Suchitra Sebastian - 新一代超導體 (Solve for X - Suchitra Sebastian - A New Generation of Superconductors)

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