This video was made with the support of the Heising Simons Foundation. Support MinutePhysics on Patreon! http://www.patreon.com/minutephysics Link to Patreon Supporters: http://www.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 https://www.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) https://www.preposterousuniverse.com/blog/2010/06/04/marketing-cp-violation/ Electroweak CP Violation on Scholarpedia http://www.scholarpedia.org/article/CPviolationinelectroweakinteractions The Wu Experiment https://en.wikipedia.org/wiki/Wuexperiment Martin Gardner, The New Ambidextrous Universe https://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) https://www.hep.phy.cam.ac.uk/thomson/lectures/partIIIparticles/Handout122009.pdf Homochirality https://en.wikipedia.org/wiki/Homochirality L-glucose (vs D-glucose) https://en.wikipedia.org/wiki/L-Glucose Radioactive Nucleus Decay http://www.radioactivity.eu.com/site/pages/RadioactiveSeries.htm CP Violation in Semi-Leptonic Decays (SEE PAGE 426 for reference to definition of MATTER) https://www.hep.phy.cam.ac.uk/thomson/lectures/partIIIparticles/Handout122009.pdf Kaon Decay Modes http://pdg.lbl.gov/2012/listings/rpp2012-list-K-zero-L.pdf Flipped bowling Jesus scene in Big Lebowski https://www.youtube.com/watch?v=lWz8NGIisMo Isotopes of Uranium https://en.wikipedia.org/wiki/Isotopesofuranium Beta Decay https://en.wikipedia.org/wiki/Betadecay The Wu Experiment https://en.wikipedia.org/wiki/Wuexperiment Kaons https://en.wikipedia.org/wiki/Kaon CP Violation in Symmetry Magazine https://www.symmetrymagazine.org/article/charge-parity-violation Physics Stack Exchange on CP Violation https://physics.stackexchange.com/questions/160511/what-cp-violating-processes-do-we-know-of MinutePhysics is on twitter - @minutephysics And facebook - http://facebook.com/minutephysics And Google+ (does anyone use this any more?) - http://bit.ly/qzEwc6 Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute! Created ... https://www.youtube.com/watch?v=Elt0Gt9Cb6Q

Support MinutePhysics on Patreon: http://www.patreon.com/minutephysics Three Blue One Brown: https://www.youtube.com/channel/UCYO_jab_esuFRV4b17AJtAw Why you can’t clone Schrödinger’s cat: this video presents the full proof of the “No Cloning” Theorem in Quantum Mechanics – without any fancy math! (stereotypical qubit has been replaced with Schrödinger’s cat). The full proof relies on the linearity of quantum (aka unitary) transformations, and the tensor product of multiple systems, to show that perfect cloning is impossible (though teleportation is allowed) Thanks to everyone who supports MinutePhysics on Patreon! Link to Patreon supporters here: http://www.minutephysics.com/supporters.html ... https://www.youtube.com/watch?v=owPC60Ue0BE