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Currently Playing: A "Day" Isn't What It Used To Be

How we understand time with clocks is fundamentally different than the passage of cosmic time and this is mainly due to our time zones. Let's take a look at the history of timekeeping to see how these two concepts of time coexist in our lives. Check out Mr. Beat's video here: https://youtu.be/qjUT7FbmNZ8 Nick Lucid - Host/Writer/Editor/Animator Natalie Wells - Researcher Vanessa R Bradley - Thumbnail ________________________________ VIDEO ANNOTATIONS/CARDS What is Dark Matter? https://youtu.be/cncCu7iJE24 ________________________________ RELATED YOUTUBE VIDEOS How Earth Moves (Vsauce): https://youtu.be/IJhgZBn-LHg Weirdest Time Zones (RealLifeLore): https://youtu.be/J1kOkoma_hM Problems with Time Zones (Computerphile): https://youtu.be/-5wpm-gesOY Daylight Savings Time (It's Okay To Be Smart): https://youtu.be/bMrb56dDpic Daylight Savings Time (Trace Dominguez) https://youtu.be/w6TtIMeBEvc ________________________________ SUPPORT THE SCIENCE ASYLUM Patreon: http://www.patreon.com/ScienceAsylum YouTube Membership: https://www.youtube.com/channel/UCXgNowiGxwwnLeQ7DXTwXPg/join Advanced Theoretical Physics (Paperback): http://www.lulu.com/shop/nick-lucid/advanced-theoretical-physics-a-historical-perspective/paperback/product-24250687.html Advanced Theoretical Physics (eBook): https://gumroad.com/l/ubSc Merchandise: https://www.scienceasylum.com ________________________________ HUGE THANK YOU TO THESE SUPPORTERS Asylum Counselors: Matthew O'Connor, Nikolaos Vasiloglou II Asylum Orderlies: Dhruv Singhal, Fabio Manzini, Josiah Gleaton, Medec Hurtz Einsteinium Crazies: Bosphorus, Eoin O'Sullivan, Ilya Yashin, Jonathan Lima, Joseph Salomone, Ken Davis, Sean K, Wacky, Blank NA, Flying Monkey Plutonium Crazies: Al Davis, Compuart, Ellis Hall, Kevin MacLean, Madhu Subbu, Rick Myers, Vid Icarus Platinum Crazies: André Weyermann, Benjamin Dixon, Clayton Bruckert, David Johnston, Jon Adams, Jonas Wepeel, Jonathan Reel, Kyle Bowles, Marino Hernandez, Mikayla Eckel Cifrese, Mr. Orn Jonasar, Olga Cooperman, Patrick Mathieson, Stephen Blinn, Stephen Gailey, Tom Hawking, Don Wilshe ________________________________ OTHER SOURCES Ian McNeil. (2002). An Encyclopedia of the History of Technology: Vol. Taylor & Francis e-Library ed. Routledge https://www.census.gov/popclock/world https://www.timeanddate.com/time/map/ https://www.jstor.org/stable/43523865 https://www.jstor.org/stable/1005923 https://www.scientificamerican.com/article/experts-time-division-days-hours-minutes/ https://physicsworld.com/a/a-brief-history-of-timekeeping/ https://www.scientificamerican.com/article/a-chronicle-of-timekeeping-2006-02/ https://www.sciencemuseum.org.uk/objects-and-stories/telling-time-sun https://physics.nist.gov/time https://www.loc.gov/rr/business/businesshistory/November/day-of-two-noons.html https://multiverse.ssl.berkeley.edu/Calendar-in-the-Sky/Articles/Chinese-New-Year https://openstax.org/books/astronomy/pages/4-2-the-seasons https://eaae-astronomy.org/find-a-sundial/how-does-a-sundial-work https://en.wikipedia.org/wiki/Equation_of_time https://slate.com/news-and-politics/2014/02/how-wrong-is-your-time-zone-map-shows-how-far-world-clocks-are-from-solar-time.html https://explainingscience.org/2015/08/24/september-18-the-shortest-day/ ________________________________ LINKS TO COMMENTS https://www.youtube.com/watch?v=cncCu7iJE24&lc=UgzyYE7GHIN1go_FaMR4AaABAg https://www.youtube.com/watch?v=cncCu7iJE24&lc=UgwIgC1Ewtvh--z6oFd4AaABAg https://www.youtube.com/watch?v=cncCu7iJE24&lc=Ugxn_bkuLin1NDprPYh4AaABAg ________________________________ IMAGE CREDITS China Clock Tower: https://commons.wikimedia.org/wiki/File:Clock_Tower_from_Su_Song%27s_Book_desmear.JPG Moon Phases: https://svs.gsfc.nasa.gov/4874 Time Zone Map: https://www.cia.gov/the-world-factbook/maps/world-regional/ October 1582: https://www.timeanddate.com/calendar/custom.html?year=1582&month=10&country=13&cdt=1&ft=404245_7e8ac48693176768a16cbe006a6613f4&typ=1&display=1&df=1 Earth's Terminator: https://svs.gsfc.nasa.gov/11353 ________________________________ TIME CODES 00:00 Cold Open 00:43 Clock time is meaningless 02:04 Ancient history of timekeeping 04:05 What is a day? 07:23 Modern history of timekeeping 10:19 Summary 12:18 Outro 12:46 Featured Comment