How We Proved Earth Rotates Using a Giant Swinging Ball

People have suspected that Earth rotates for thousands of years, but how did we first prove it? Hosted by: Stefan Chin ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters: Kevin Bealer, Mark Terrio-Cameron, KatieMarie Magnone, Patrick Merrithew, D.A. Noe, Charles Southerland, Fatima Iqbal, Sultan Alkhulaifi, Nicholas Smith, Tim Curwick, Alexander Wadsworth, Scott Satovsky Jr, Philippe von Bergen, Bella Nash, Chris Peters, Patrick D. Ashmore, Piya Shedden, Charles George ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: https://www.aps.org/publications/apsnews/200702/history.cfm https://plato.stanford.edu/entries/philolaus/ http://physicstoday.scitation.org/doi/10.1063/PT.3.1195 http://itotd.com/articles/362/foucaults-pendulum/ http://www.catholic.org/encyclopedia/view.php?id=5440 https://www.scientificamerican.com/article/how-fast-is-the-earth-mov/ http://scienceblogs.com/startswithabang/2010/09/17/but-it-moves-how-we-know-the-e/ https://explorable.com/greek-astronomy Images: https://commons.wikimedia.org/wiki/File:Foucault.jpg https://commons.wikimedia.org/wiki/File:Foucault_Pendulum.jpg https://commons.wikimedia.org/wiki/File:Plato%27s_Academy_mosaic_from_Pompeii.jpg https://commons.wikimedia.org/wiki/File:Giovanni_Battista_Riccioli.jpg https://commons.wikimedia.org/wiki/File:Longitude_(PSF).png