Check out Serving Up Science on https://www.youtube.com/channel/UCPQErRghCrtrbWOYiJA3okw : https://www.youtube.com/watch?v=Mi84o9ZKuXs We’re on PATREON! Join the community https://www.patreon.com/itsokaytobesmart ↓↓↓ More info and sources below ↓↓↓ All of modern society relies upon a seemingly simple but surprisingly complex unit of measurement: the second. But knowing exactly what a “second” is is more complicated than you might think! SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub Thank you to the following for helpful discussions and research for this episode: Geoff Chester - U.S. Naval Observatory Judah Levine - National Institute of Standards and Technology Jeffrey Sherman - National Institute of Standards and Technology Elizabeth Donley - National Institute of Standards and Technology ----------- High fives to all our Brain Trust Patrons: paul andre bouis Mark Littlehale Ali Freiburger Mehdi Damou Barbora Bei Burt Humburg Roy Lasris dani bowman David Johnston Salih Arslan Baerbel Winkler Robert Young Eric Meer Dustin Karen Haskell Join us on Patreon! https://patreon.com/itsokaytobesmart Twitter http://www.twitter.com/DrJoeHanson http://www.twitter.com/okaytobesmart Instagram http://www.instagram.com/DrJoeHanson http://www.instagram.com/okaytobesmart Merch null Facebook https://www.facebook.com/itsokaytobesmartpbs/