Physics Girl: This thing is -270°C and is EVERYWHERE

Teacher or professor: Physics Girl
Subject: Physics
Content of the Lesson: Download the PBS Video App: https://www.pbs.org/pbs-video-app/ The universe is microwaving itself. A mystery signal discovered in the 1960s led to a Nobel prize. In this video, Dianna explores one of the most mysterious discoveries in physics - a constant microwave signal that seemed to be coming from everywhere in the universe. It turned out to be light from an unusual process 13.8 billion years ago. Special thanks to our Sally Ride level patrons: Alejandro Gutierrez, Brian O'Connell, Darkbit, Dave Butler, David Cichowski, Edi, Fabrice Eap, Henning Bitsch, Kenneth Hunter, Margaux Lopez, and Vincent Flores. Join the Physics Girl Patreon community! ►► https://www.patreon.com/physicsgirl Check out MinutePhysics - Why do compressed air cans get cold? https://www.youtube.com/watch?v=kjraelDMrFQ If you liked this video check out these: Why is the universe flat? https://www.youtube.com/watch?v=MTUsOWtxKKA How the Edge of our Galaxy Defies Known Physics https://www.youtube.com/watch?v=c6Eq2sI1NDY MANY thanks to: Nick Lucid, Katie Mack, Derek Muller, Henry Reich, Thom Ory and Edward Wright for helping with this video! Thanks to Levi Butner for inspiriting the idea for this video by asking me WAY too many questions during work! :) http://physicsgirl.org/ http://twitter.com/thephysicsgirl http://facebook.com/thephysicsgirl http://instagram.com/thephysicsgirl Creator/Host: Dianna Cowern Editor: Levi Butner Writing: Valerie Bentivegna Research/Copy Editing: Dianna Cowern Sources: Temperature and wavelength of original CMB: http://www.astro.uvic.ca/~jwillis/teaching/astr405/astr405_lecture3.pdf http://www.astronomy.ohio-state.edu/~ryden/ast162_9/notes39.html ESA Planck References: http://www.esa.int/Science_Exploration/Space_Science/Planck NASA WMAP Reference: https://map.gsfc.nasa.gov Interview with John G. Cramer (via email) https://kipac.stanford.edu/highlights/understanding-dark-energy-through-cmb-observations Nobel prize photo - Alexander Mahmoud 2018 https://www.aps.org/publications/apsnews/200207/history.cfm


Click here to view video on YouTube.