Channel: minutephysics

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Description: This video was made with the support of the Heising Simons Foundation. Support MinutePhysics on Patreon! patreon.com/minutephysics Link to Patreon Supporters: minutephysics.com/supporters This video is about the Ozma problem of distinguishing the chirality (ie left-handedness or right-handedness) of matter using weak interaction processes like beta decay (for example in uranium), or neutral kaon/k-meson decay. This is wrapped up in the phenomenon of CP violation, by which charge and parity are both violated by certain weak interaction processes - this enables antimatter to be unambiguously distinguished from matter, and left handed chirality from right handed. REFERENCES The Ozma Search for Extraterrestrial Intelligence (SETI) Project seti.org/seti-institute/project/details/early-seti-project-ozma-arecibo-message Sean Carroll on CP Symmetry (& why we shouldn’t trot out baryogenesis all the time) preposterousuniverse.com/blog/2010/06/04/marketing-cp-violation Electroweak CP Violation on Scholarpedia scholarpedia.org/article/CPviolationinelectroweakinteractions The Wu Experiment en.wikipedia.org/wiki/Wuexperiment Martin Gardner, The New Ambidextrous Universe books.google.com/books?id=kdLGa8cPPUC&lpg=PP1&pg=PR2#v=onepage&q&f=false Lecture notes on CP Violation and the CKM Matrix, Cambridge (Mark Thomson) hep.phy.cam.ac.uk/thomson/lectures/partIIIparticles/Handout122009.pdf Homochirality en.wikipedia.org/wiki/Homochirality L-glucose (vs D-glucose) en.wikipedia.org/wiki/L-Glucose Radioactive Nucleus Decay radioactivity.eu.com/site/pages/RadioactiveSeries.htm CP Violation in Semi-Leptonic Decays (SEE PAGE 426 for reference to definition of MATTER) hep.phy.cam.ac.uk/thomson/lectures/partIIIparticles/Handout122009.pdf Kaon Decay Modes pdg.lbl.gov/2012/listings/rpp2012-list-K-zero-L.pdf Flipped bowling Jesus scene in Big Lebowski youtube.com/watch?v=lWz8NGIisMo Isotopes of Uranium en.wikipedia.org/wiki/Isotopesofuranium Beta Decay en.wikipedia.org/wiki/Betadecay The Wu Experiment en.wikipedia.org/wiki/Wuexperiment Kaons en.wikipedia.org/wiki/Kaon CP Violation in Symmetry Magazine symmetrymagazine.org/article/charge-parity-violation Physics Stack Exchange on CP Violation physics.stackexchange.com/questions/160511/what-cp-violating-processes-do-we-know-of MinutePhysics is on twitter - @minutephysics And facebook - facebook.com/minutephysics And Google+ (does anyone use this any more?) - bit.ly/qzEwc6 Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute! Created by Henry Reich