Professor Chris Bishop rehearses for his Science of Fireworks event at the Ri by exploding a hydrogen balloon in the Faraday Theatre. Filmed on a Google Nexus S by our intern Ed. Find out more about the event here: http://bit.ly/uoAKyo 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