Why did the Royal Institution used to have a froggery? Before more sophisticated methods for detecting electricity eme…’s legs would twitch when sparked with electricity. Michael Faraday and his mentor Humphry Davy were at the forefront of early experiments with electricity and electromagnetism, but imagine trying to do those experiments without any reliable way of testing your circuits. 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