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  • This is not a particle accelerator.

  • A particle accelerator is not some kind of

  • evil super villain torture device.

  • "You may fire when ready."

  • A particle accelerator is used for health,

  • safety,

  • discovery,

  • and for learning more about our Universe.

  • You can't see what it does, but,

  • you can feel it.

  • The question is,

  • can you survive its effects?

  • Chances are you've probably already been

  • exposed to accelerated particles before!

  • So how do you feel?

  • From X-rays

  • to airport security,

  • treating waste water and

  • killing cancer cells,

  • particle accelerators continue to

  • push the boundaries of human potential.

  • They might even hold the secret to time travel!

  • But with great power,

  • comes great responsibilty...

  • and the potential for

  • some pretty serious accidents.

  • In 1978, Russian scientist Anatoli Bugorski

  • was checking in on the

  • malfunctioning U-70 synchrotron

  • which, at the time, was

  • the Soviet Union's largest particle accelerator.

  • Of course, in those days,

  • "checking in" meant putting your head in there

  • and taking a good, hard look for yourself.

  • It's hard to imagine what

  • Bugorski might've been looking for,

  • since you can't physically see

  • accelerated particles.

  • They move nearly as fast as the speed of light.

  • When a safety mechanism failed,

  • sending a radioactive beam of protons

  • through Bugorski's head,

  • the blinding flash of light he saw,

  • "brighter than a thousand suns,"

  • according to him,

  • wasn't actually a burst of accelerated particles.

  • That intense light was the result of

  • 76 billion electron volts

  • being rammed through Bugorski's skull.

  • For comparison,

  • the standard proton therapy cancer treatment

  • is no more than 250 million electron volts,

  • firing at a speed 300 times less

  • than what Bugorski got.

  • And yet, Bugorski didn't feel any pain.

  • The whole thing happened in an instant.

  • But once it was over,

  • Bugorski's face immediately started swelling.

  • He was rushed to the hospital,

  • where doctors told him

  • he wouldn't live for much longer.

  • But Bugorski is still alive today.

  • Half of his face is paralyzed,

  • he's deaf in one ear, and,

  • he suffers from epilepsy.

  • But aside from that, he lives a pretty normal life.

  • So, are particle accelerators safe to touch?

  • Not quite.

  • By today's standards,

  • the U-70 synchrotron that

  • shot through Bugorski's head

  • is actually a very weak particle accelerator.

  • In comparison,

  • the Large Hadron Collider,

  • which is the world's largest and

  • highest-energy particle collider,

  • fires at about 200 times

  • more power than the U-70.

  • This thing shoots high-energy beams

  • around a ring that's 27 kilometers (17 mi) long,

  • at a speed that's equivalent to

  • circling the world 7.5 times per second!

  • The purpose of this is to produce

  • high-energy collisions

  • that will recreate the same conditions

  • that followed the Big Bang

  • that created our universe.

  • These collisions might create new particles

  • which we've never seen before,

  • offering up clues to how you, me, our world,

  • and everything else came into existence.

  • Do you really want to get your head

  • in the way of that?

  • Check your ego before you hurt yourself, and,

  • don't interrupt a particle collider

  • from uncovering more mysteries.

  • For all we know, time travel is possible!

  • But can you imagine how weird it would be

  • to meet a time traveler?

  • Well, that's a story for another WHAT IF.

This is not a particle accelerator.

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B1 中級

粒子加速器に頭を突っ込んだらどうなるのか? (What Happens If You Put Your Head Into a Particle Accelerator?)

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    林宜悉 に公開 2021 年 01 月 14 日
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