Name: 【TED-Ed】反物質怎麼了？- Rolf Landua (【TED-Ed】What happened to antimatter? - Rolf Landua)
Uploaded: 2021-01-14T04:42:24.000Z
Duration: 5 min 17 s

Is it possible to create something out of nothing?

進階被動語態

Or, more precisely, can energy be made into matter?

或更精確的說 能量可以轉換成物質嗎？

And there's something pretty mysterious about antimatter:

關於反物質，有件很神秘的事：

there's way less of it out there than there should be.

它存在的量，遠比它應有的量少

Let's start with the most famous physics formula ever:

讓我們從最有名的物理公式說起：

It basically says that mass is concentrated energy,

基本上是說，質量是濃縮的能量

like two currencies with a huge exchange rate.

But how do I actually transform energy into matter?

要怎樣才能把能量轉換成物質呢？

we see that these particles always come in pairs,

我們會看到 這些粒子總是成對出現

That's because particles always have a counterpart,

but it's the daily life of particle accelerators.

但對粒子加速器來說，卻稀鬆平常

在歐洲核子研究中心的 大型強子對撞機中相撞

It has a very small mass and negative electric charge.

both particles are identical and perfectly stable.

兩種粒子一模一樣，而且完全穩定

And the same is true for their heavy cousins,

would look, feel, and smell just like our world.

看起來、摸起來、聞起來 都像我們的世界

Now imagine that a marble and an antimarble

about harnessing the energy stored in antimatter,

for example, to fuel spaceships like Star Trek.

例如《星際爭霸戰》裡 太空船的燃料

After all, the energy content of antimatter

is a billion times higher than conventional fuel.

The energy of one gram of antimatter would be enough

for driving a car 1,000 times around the Earth,

or to bring the space shuttle into orbit.

So why don't we use antimatter for energy production?

為什麼我們不用反物質產生能量呢？

Well, antimatter isn't just sitting around,

But, what if there was some antimatter in outer space

A few decades ago, many scientists believed

that there is no significant amount of antimatter

which is weird because, like we said before,

這是很詭異的，如我們先前所說

a huge amount of energy was transformed into mass,

大部份的物質，及所有的反物質

producing an enormous amount of radiation

of the original amount of matter stuck around

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【TED-Ed】反物質怎麼了？- Rolf Landua (【TED-Ed】What happened to antimatter? - Rolf Landua)

matter

amount

equivalent

exist