Warning: Contains flashing images. You know those videos showing working perpetual motion machines?’’re not real. Perpetual motion machines violate the fundamental laws of our universe. In this video, we teamed up with YouTuber Tom Scott to provide three simple ways to debunk persistent claims of perpetual motion: a guide to protect you from the bunk. People have been peddling perpetual motion for centuries. On his channel, Tom Scott gets his hands on Thomas Young’s machine from our museum, explains why it doesn’t work, and imagines just what would happen if we really could make a perpetual motion machine. Subscribe for regular science videos: http://bit.ly/RiSubscRibe The Ri is on Twitter: http://twitter.com/ri_science and Facebook: http://www.facebook.com/royalinstitution and Tumblr: http://ri-science.tumblr.com/ Our editorial policy: http://www.rigb.org/home/editorial-policy Subscribe for the latest science videos: http://bit.ly/RiNewsletter