Can you solve the mystery of The Professor's Perpetual Motion machine? Leave a comment!
More links and info in full description ↓↓↓

Discuss on Brady's subreddit: https://redd.it/8ogj6h

Se emore amazing objects at Objectivity: http://bit.ly/Objectivity

Support us on Patreon:   / periodicvideos  

More chemistry at http://www.periodicvideos.com/
Follow us on Facebook at   / periodicvideos  
And on Twitter at   / periodicvideos  
From the School of Chemistry at The University of Nottingham: http://bit.ly/NottChem

With thanks to the Garfield Weston Foundation.

Periodic Videos films are by video journalist Brady Haran: http://www.bradyharan.com/
Brady's Blog: http://www.bradyharanblog.com

Join Brady's mailing list for updates and extra stuff --- http://eepurl.com/YdjL9