UPJOKE
speed of lightbradyonimaginary numbercausalitytachyonic fieldeinsteinfour-momentumectoplasmmassneutrinoproper timerest massparticleghosthaint

Tachyon Jokes

A tachyon

Who's there?

Knock, knock

A tachyon flies into a bar

The bartender says, "We don't serve tachyons here."

"Why not? You did tomorrow."

Why did the tachyon cross the road?

Because it was on the other side.

Tacky on you, that outfit is!

Tacky on who?

[Tachyon!](https://en.wikipedia.org/wiki/Tachyon)

Who's there?

Knock, knock!

Perplex Numbers

I was talking to my physics professor the other day, and some theoretical work he did with tachyons came up. A tachyon travels faster than light, and in order to use some of the math from special relativity, one had to define what he called "perplex numbers"--numbers with negative absolute value. He...

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