Professor Roger Bowley has some fun with a Dropper Popper. More videos with Roger from over the years: http://bit.ly/RogerBowley Discuss on Brady's subreddit: https://redd.it/63gtqg Tadashi's Toys (series on Numberphile): http://bit.ly/tadashi_vids Visit our website at http://www.sixtysymbols.com/ We're on Facebook at http://www.facebook.com/sixtysymbols And Twitter at http://twitter.com/sixtysymbols This project features scientists from The University of Nottingham http://bit.ly/NottsPhysics Patreon: https://www.patreon.com/sixtysymbols Sixty Symbols videos by Brady Haran http://www.bradyharanblog.com/ Email list: http://eepurl.com/YdjL9