Martin Bauer: The Revolutionary Stern-Gerlach Experiment (#305)

Into the Impossible With Brian Keating

Brian Keating

Physics, Natural Sciences, Science

4.7 • 1.1K Ratings

🗓️ 24 March 2023

⏱️ 81 minutes

🔗️ Recording | iTunes | RSS

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Summary

Please support the podcast by taking our short listener survey: https://www.surveymonkey.com/r/intotheimpossible Watch the video of this episode here: https://www.youtube.com/live/hiw3aJwc7TU?feature=share?sub_confirmation=1 The Stern-Gerlach experiment is one of the most important results in physics history. Shockingly, the paper had never been translated into english until today's guest, Prof. Martin Bauer set himself to the task. We'll discuss the experiment, as well as Martin's research. Bring your questions for this renowned science popularizer and scientist! Read the paper: The Stern-Gerlach Experiment, Translation of: "Der experimentelle Nachweis der Richtungsquantelung im Magnetfeld" by Martin Bauer https://arxiv.org/abs/2301.11343 The following is a translation of the paper by Walther Gerlach and Otto Stern that reported the first evidence for the quantization of atoms in a magnetic field. The atoms have quantum states corresponding to a limited number of possible angles between the directions of the angular momenta of the atoms and the magnetic field, also called space quantization. The wording and layout have been chosen to be as close to the original as possible. For context we recommend the recent review. Martin Bauer is Assistant Professor (Research) - UKRI FLF in the Department of Physics . His Research interests include: Dark Matter Heavy Quark and Lepton Flavour Physics Higgs Physics Research groups Elementary Particle Theory Institute for Particle Physics Phenomenology https://twitter.com/martinmbauer Subscribe to the Jordan Harbinger Show for amazing content from Apple’s best podcast of 2018! https://www.jordanharbinger.com/podcasts Please leave a rating and review: On Apple devices, click here, https://apple.co/39UaHlB On Spotify it’s here: https://spoti.fi/3vpfXok On Audible it’s here https://tinyurl.com/wtpvej9v Find other ways to rate here: https://briankeating.com/podcast Support the podcast on Patreon https://www.patreon.com/drbriankeating or become a Member on YouTube- https://www.youtube.com/channel/UCmXH_moPhfkqCk6S3b9RWuw/join To advertise with us, contact advertising@airwavemedia.com Learn more about your ad choices. Visit megaphone.fm/adchoices

Transcript

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0:00.0	There is a directional effect in quantization so that basically the angular momentum is quantized leading to this effect.
0:11.0	It's something that was implicitly clear before like there was
0:14.7	indirect proof of that even though people weren't actually convinced that this
0:18.6	effect would be there. It's the first direct proof of that this existed. It is a really it is a pioneering experiment if you think about it.
0:26.9	There's the first vacuum to that degree. It is the first molecular beam that they had to that degree.
0:32.1	When the experiment was built, Boa himself
0:34.3	said that he didn't believe it might work.
0:36.2	For the time of great confusion
0:37.3	where this experiment just basically
0:40.4	put a nail on the coffin of classical mechanics was clear there's no way this could be described by anything else as by new theory that was
0:48.1	That was about to appear. It should be emphasized that all theories that we have have untestable consequences
0:54.2	they're not directly accessible to us. The fact that we know that these kind of
0:58.5	theories predict something like the multiverse should get people into the
1:02.2	business of thinking about whether it can be tested.
1:04.6	If it can never be tested, it's not something we could waste our time with.
1:07.4	If someone has a brilliant idea of how maybe there is a test that nobody has thought of yet,
1:12.0	then we should take into account because that could
1:14.2	tell us whether these theories are right or not. Welcome everyone to this deep physics episode of Into the
1:26.2	Impossible. Prepare to expand your science vocabulary and
1:29.8	understanding as host Brian Heating and theoretical particle physicist
1:33.5	extraordina Martin Bauer, unpack one of the most seminal physics
1:37.2	experiments ever done. Supported by Einstein himself, the Stern Gerlach
	...

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