01:36:13 Spencer Pasero: Activities available at the QuarkNet Data Activities Portfolio: https://quarknet.org/data-portfolio 01:37:14 patrickyim: I sm muted 01:39:41 Allison Reinsvold Hall: You'll see some problems like that in your Dark Matter homework assignment for next week (taken from the Perimeter Institute, not QuarkNet) 01:40:05 patrickyim: I do use DAP, eg. Histogram lesson on the weight of US pennies. DAP if great for NGSS SEPs. 01:48:09 patrickyim: This session on neutrinos will fill in on beta decay when I teach Band of Stability in Chemistry. 01:48:38 Martin, high school @NY, USA: I would like to learn more about masterclass - I will teach AP Physics 2 - and I would like to do masterclass with my students. 01:52:02 Tabatha Collins: Are there scientist that Zoom into a classroom at CERN or FERMI lab to have an expert talk? Like a Scientist outreach?? 01:54:05 Shane Wood: https://atlas.cern/Discover/Visit/Virtual-Visit 01:55:01 patrickyim: I will 3D print the CMS system as realia for my classroom. 01:55:28 Kenneth Cecire: CMS virtual visit: https://cms.cern/interact-with-cms/virtual-visits 01:55:35 Steven Millward: The Perimeter Institute in Waterloo has a bunch of talks for the layperson that are recorded about a variety of physics topics. They aren't live but they are very good. 01:56:06 Shane Wood: https://cms.cern/interact-with-cms/virtual-visits 01:58:28 patrickyim: The coupled pendulum is a great lab in preparation for AP Physics exam. 02:00:54 Tabatha Collins: A good book on the history of the neutrino is Neutrino Hunters. 02:08:28 Tabatha Collins: Why argon? 02:20:37 Tabatha Collins: If they change flavor then it has to change mass as they are not the same mass, how does it do that without adding or subtracting energy? 02:34:45 Martin, high school @NY, USA: … so you cannot measure mass and flavor concurrently, similarly, as you cannot measure position and momentum simultaneously? 02:36:19 Nickolas Maloupis: Is 1,2,3 type related to close range, medium range, and far range, for example more 3 types are detected at further ranges? 02:36:21 patrickyim: Why the word “oscillation”, which implies back and forth phenomenon? 02:36:30 Kenneth Cecire: Sort of but it is not quite the same as the Uncertainty Principle. 02:37:08 Spencer Pasero: @patrickyim Because the change does go back and forth 02:37:28 Alison Bulson: Is there a difference between “flavor” state and “mass” state? 02:37:32 Nickolas Maloupis: is range and flavor random? 02:38:14 Spencer Pasero: @Nickolas Maloupis No, the three types are three mixtures of flavors 02:39:12 Tabatha Collins: How do we know that it is an oscillation rather than one particle that interacts in three different ways when it actually interacts? 02:39:25 patrickyim: What is wrong with the concept that there is fundamental only one neutrino, which can exist in a distribution of 3 mass states? 02:40:10 Kenneth Cecire: Alison, that is why neutrinos are so interesting. For other particles, the flavor state and the mass state are the same. An electron has electron mass, a muon has muon mass, etc. But neutrinos have separate flavor and mass states. An electron neutrino has a mass that is it a superposition of mass states 1, 2, and 3. Etc. Oh my. 02:41:11 Shelley Bullard: Is it kind of like ions? 02:41:40 Kenneth Cecire: Like ions how? 02:41:44 Amy Hageman: Are mass states oscillating or just the flavor states? 02:42:23 Kenneth Cecire: I think both, Amy. Good question. 02:42:24 patrickyim: Are the oscillations affected by the medium through which a neutrino propagate? 02:42:39 Shelley Bullard: Like it’s the same thing but in variations like variations in properties. Unlike a stable atom that has the same state all the time. 02:42:54 Spencer Pasero: Patrick, not really; neutrinos don't really interact with the media through which they travel 02:43:05 Kenneth Cecire: Awesome question, Patrick! How might we find out? 02:43:30 Spencer Pasero: Replying to "Awesome question, Pa..." This is a much better answer than mine :-) 02:43:36 Allison Reinsvold Hall: Introduce yourself to today’s group. Discuss the Gizmodo article: https://gizmodo.com/why-the-u-s-is-betting-it-all-on-the-most-puzzling-par-1843517654 •What part of the article stood out to you? •What are the similarities and differences between neutrino experiments and collider experiments like ATLAS and CMS at the LHC? •What is one of the questions that DUNE is trying to answer? Discuss the neutrino oscillations video with the compound pendulum: https://www.youtube.com/watch?v=YqVF3NSc5xg •If you actually built a pendulum, show it off! •How does this relate to neutrino oscillations? What part of the pendulum’s motion corresponds to the neutrino mass states and what part corresponds to the neutrino flavor states? 02:59:12 patrickyim: Feynman said to students, it’s OK if you don’t understand QM because your professor also doesn’t understand it either 02:59:22 Steven Millward: "If you are not completely confused by quantum mechanics, you don't understand it." -John Wheeler 02:59:31 Kenneth Cecire: Another CME tomorrow! Or so I read... 03:06:15 Nickolas Maloupis: Is flavor determined by the decay tracks, I believe this was stated earlier but I didn’t catch it fully 03:11:45 Kenneth Cecire: We measure the flavor of a neutrino by the lepton produced when it (and if) it has a weak interaction with other matter. 03:13:29 Kenneth Cecire: Smaller, I think 03:14:13 patrickyim: How can an antineutrino have a algebraic sign opposite neutrino? 03:14:47 patrickyim: Charge sign 03:15:36 Martin, high school @NY, USA: Would not gravity wave arrive first? 03:15:39 Steven Millward: They are both neutral, but the spins of neutrinos and antineutrinos may be different. 03:15:53 Kenneth Cecire: Not electric charge - neutrinos are neutral. I think they have opposite weak interaction charge (also called "weak isospin") but I need to check. 03:16:31 Steven Millward: But, unless there is some rotation involved with the supernova, gravitational waves will not be generated. 03:17:45 patrickyim: Thank you, bye. 03:17:50 Maajida Murdock: Good night. Thank you 03:17:57 Anastasia Perry: thank you 03:17:58 Joanne Klonowski: Thank you, great stuff! 03:18:00 Kenneth Cecire: Here is a better answer about antineutrinos: https://physics.stackexchange.com/questions/338917/what-is-the-difference-between-a-neutrino-and-an-antineutrino