How Cheap Cigars Legitimized Quantum Mechanics

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Published 2024-07-13
The Stern-Gerlach Experiment in lauded in textbooks around the world for its contributions to the world of quantum physics. But for a few years, scientists unknowingly praised it for proving the wrong thing! Because instead of proving an established hypothesis about how electrons work, it had actually discovered an entirely unexpected phenomenon (called spin).

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Sources:
docs.google.com/document/d/e/2PACX-1vRj8GwHsklNlgK…

All Comments (21)
  • @grnd4y
    I understood every word you just said completely and also still have no idea how any of this works.
  • When my paternal grandpa was in high school, one of the math problems on a test required finding the volume of the intersection of two cylinders. He pictured the cylinders in his head and came up with the answer. Thing is, the test required that he show his work, so he scribbled down what he though might be the equation before moving on. The next day, the teacher asked to speak with him. Turns out, he was the only student in the class to get that particular question rigth, but his equation was all wrong.
  • At least there's no confirmation bias since he's trying to prove it wrong initially 😂
  • @Brown95P
    Generations will truly remember the Stern-Gerlach Experiment as the first scientific implementation of the "task failed successfully" meme.
  • Look at that curly hair coming in! Lol just a reminder how lucky we are to still have you on this Earth. Thank you for being you.
  • @colddogs
    smoking in the lab, the famous follow-up song to smoking in the boys room
  • "Have even gotten a math test back and found you got a tricky question right?" No
  • "Gatterman recommends that the operator smoke during the preparation, for he found that a trace of hydrogen cyanide is sufficient to give the tobacco smoke a highly characteristic flavor. This preliminary warning is useful in case of leaky apparatus or a faulty hood."
  • physics student here! I never knew there was that lil whoopsie period with Bohr's angular momentum. it's easier to teach some basic spin than it is atomic oriental angular momentum so it makes sense but this is delightful
  • Still getting used to curly-haired Hank. Not like it's a bad thing, just "oh yeah he underwent a transformation because of murdering cancer"
  • @SlowToe
    If I've learnt anything from this video it's to take up cigars. Thanks Crash Course ❤
  • @Brownyman
    Using silver during hyperinflation is dedication.
  • @davido2644
    Love the 90s / early 00s aesthetic of the background and some instances of the camera work. Also, look into the "discovery" of potassium flare stars, another incident in science (astronomy) involving smoking.
  • My entire career has been based on the spin of unpaired electrons. So, thank you, Stern & Gerlach!
  • I'm just amazed that the quantitative relationship between the two angular momenta was ½ and not some seemingly random but close value like √3/𝜋 or some other random, difficult to pin down irrational value. Measurements from nature may appear to relate to each other by (the incredibly convenient) powers of 2, but they rarely actually do. Close may be good enough for the abstract cigar, but not close enough for lab work. richard --
  • @rosskappa5410
    Beautifully explained a somewhat complex story. I love this channel. Hope I can have the economic power to support you guys in the future !