Uploaded December 2024 | Updated September 2026, 1 week ago

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The Stern-Gerlach experiment was the first detection of quantum spin, except we didn't know it for 4 years. At the time, we didn't even know quantum spin was a thing.

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Nick Lucid - Host, Writer, Editor, Animator
Em Lucid - Producer
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VIDEO ANNOTATIONS/CARDS

Spinors Explained:
youtu.be/0rrh2yT_cNk

Schrodinger's Equation:
youtu.be/LFC2HsT6Bh4

What is Quantum Spin?
youtu.be/sB1EPGmpzyg
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SOURCES

Stern and Gerlach Paper:
link.springer.com/article/10.1007/BF01326983 (German)
arxiv.org/abs/2301.11343 (English)

Uhlenbeck and Goudsmit Story:
https://www.lorentz.leidenuniv.nl/history/Einstein_archive/Rowdy_Boeyink_website/images/Uhlenbeck.pdf
https://www.lorentz.leidenuniv.nl/history/spin/goudsmit.html
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LINKS TO COMMENTS

youtube.com/watch?v=0rrh2yT_cNk&lc=Ugw3urVFlOx_X14EZ9p4AaABAg
youtube.com/watch?v=0rrh2yT_cNk&lc=UgystTndcksGvhLY_ex4AaABAg
youtube.com/watch?v=0rrh2yT_cNk&lc=UgxKx4k3xXmiud7rl_R4AaABAg
youtube.com/watch?v=0rrh2yT_cNk&lc=Ugw_dgLBrFclWGqoqtN4AaABAg
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IMAGE/VIDEO CREDITS

Portraits:
repository.aip.org/islandora/object/nbla%3A314011
repository.aip.org/islandora/object/nbla%3A297626
repository.aip.org/islandora/object/nbla%3A308604
repository.aip.org/islandora/object/nbla%3A309676
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TIME CODES

00:00 Intro
01:03 Angular Momentum
02:09 Stern-Gerlach Experiment
03:38 Experiment Results
04:55 Schrodinger Breaks Everything
07:01 Quantum Spin
08:01 Closing Thoughts
08:28 Supporter Shoutout
08:51 Featured Comment