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Complex Numbers #1039887 added October 29, 2022 at 12:01am
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A Positive Thing
"Hey, Waltz, you should do another article on something that's positive."
Here you go. You should get a charge out of this:
I don't know; the most complicated thing I can imagine is a romantic relationship. A proton ain't got nothin' on that.
More than a century after Ernest Rutherford discovered the positively charged particle at the heart of every atom, physicists are still struggling to fully understand the proton.
Maybe their attitude is too negative?
High school physics teachers describe them as featureless balls with one unit each of positive electric charge — the perfect foils for the negatively charged electrons that buzz around them.
You know, I kind of understand why the protons in a nucleus, all positively charged, don't fly away from each other: it's because on small scales there's another force stronger than electromagnetism that binds them together. What I never did get is why, since positive and negative charges attract, the electrons stay in a probability cloud around the atomic nuclei instead of just slamming into the protons.
It's not really analogous to planets orbiting the sun, though that's the model they teach you in elementary school. The reason is some really damn complicated quantum shit that I don't understand. Apparently it takes a hell of a lot of energy to get them to actually collide (this is alluded to later in the article).
Getting back to the subject, though:
College students learn that the ball is actually a bundle of three elementary particles called quarks.
Which I really don't understand. But it's still fun to say.
But decades of research have revealed a deeper truth, one that’s too bizarre to fully capture with words or images.
Because of course.
As the pursuit continues, the proton’s secrets keep tumbling out. Most recently, a monumental data analysis published in August found that the proton contains traces of particles called charm quarks that are heavier than the proton itself.
And that, dear readers, is deeply, deeply weird. I mean, quantum anything is pretty weird, but that goes way beyond weird. There's not even a word for how profoundly, utterly, mind-blowingly strange that really is.
Proof that the proton contains multitudes came from the Stanford Linear Accelerator Center (SLAC) in 1967. In earlier experiments, researchers had pelted it with electrons and watched them ricochet off like billiard balls. But SLAC could hurl electrons more forcefully, and researchers saw that they bounced back differently. The electrons were hitting the proton hard enough to shatter it — a process called deep inelastic scattering — and were rebounding from point-like shards of the proton called quarks. “That was the first evidence that quarks actually exist,” said Xiaochao Zheng, a physicist at the University of Virginia.
Always nice to hear from my university. (Except of course when they beg me for money.)
Incidentally, you might want to go to the link to look at the helpful pictures.
But the quark model is an oversimplification that has serious shortcomings.
Because of course.
The rest of the article describes the experiments and what they're finding, and I certainly think it's fascinating in addition to being really quite incredibly weird. I won't transcribe more, because it's Friday night and I have other things to do. But it's absolutely worth a look, even if you don't fully understand it.
I sure as hell didn't. |
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