Madame Wu & Parity Violation: The Most Important Experiment Ever! скачать в хорошем качестве

Madame Wu & Parity Violation: The Most Important Experiment Ever!

The laws of physics seem to exhibit symmetry. Reflections in a mirror do not change the properties of pendula and projectiles. But do we see the mirror image actually occurring in our universe when it comes to other forces, like the Weak Nuclear Force? The answer is no! In 1956, Chien S. Wu at Columbia U performed an experiment that flipped the universe in a mirror. By an incredibly painstaking process of chilling nucleons to a hair above absolute zero temperature, then reversing the spin by flipping over the spin of Cobalt-60 nuclei, she flipped the direction that most of the electrons come out of! The mirror image universe isn't real! This showed that not the electron, but the other particle emitted during weak radioactive decay, the neutrino, which carries spin, just like the photon. However, unlike photons, neutrinos only spin one way --always left-handed. Since angular momentum must be conserved, the direction the electrons are emitted was forced upon us as well. This phenomenal discovery led to Nobel Prizes...but not for Madame Wu. Find out more in this video! Teachers: get your free resource kit exploring concepts related to C.S. Wu's work from the American Physical Society here https://www.aps.org/programs/outreach... References: https://gizmodo.com/madame-wu-and-the... Lee, T.D. and Yang, C.N. (1956) “Question of parity conservation in weak interactions,” Physical Review 104(1): 254-258. Wu, C.S. et al. (1957) “Experimental test of parity conservation in beta decay,” Physical Review 105(4): 1413-1415. 📺 Watch my most popular videos:📺 A New Contender is Here!    • A New Contender Is Here!   Frank Wilczek    • Nobel Prizewinner Frank Wilczek: Beau...   Weinstein and Wolfram    • Stephen Wolfram vs. Eric Weinstein: M...   Sheldon Glashow:    • Sheldon Glashow: The Power of Useless...   Michael Saylor The Physics of Bitcoin    • Michael Saylor: The Physics of Bitcoi...   Sir Roger Penrose, Nobel Prize winner:    • Nobel Prize in Physics, Black Holes a...   Jill Tarter    • Jill Tarter: Time to Stop SETI?   Sara Seager Venus LIfe:    • Did Scientists Discover Life on Venus...   Noam Chomsky:    • Noam Chomsky: Consciousness, Elon Mus...   Sabine Hossenfelder:    • Sabine Hossenfelder: That New Theory ...   Sarah Scoles:    • Sarah Scoles, Author of “They Are Alr...   Stephen Wolfram:    • Has Stephen Wolfram discovered a new ...   🏄‍♂️ Find me on Twitter at   / drbriankeating   🔔 Subscribe for more great content https://www.youtube.com/DrBrianKeatin... ✍️Detailed Blog posts here: https://briankeating.com/blog.php 🎙️Listen on audio only platforms: https://briankeating.com/podcast.php Support the podcast:   / drbriankeating   Credits: Script and Research by Stuart Volkow Thanks to UCSD's StudioU's Treb Padula ~-~~-~~~-~~-~ Please watch: "Neil DeGrasse Tyson: Plays the Race Card!"    • Neil DeGrasse Tyson Hit Me With the R...   ~-~~-~~~-~~-~