Dr Tim Cockerill explores the science behind the most dangerous stunt in the firebreather's repertoire - the human volcano. From the volatility of the fuel to the fire breather's technique,...
========== [MUSIC PLAYING] [MUSIC PLAYING] The human volcano,
fire breathing-- it's the most dangerous stunt
in the fire eater's repertoire. But how does it work? Well, it all hinges on the
oxygen in the air. [MUSIC PLAYING] When I'm breathing fire, all
that's happening is I'm burning a fuel by blowing
it over a flame. So here's my fuel, and
here is my flame-- not very spectacular. So what's going on? Well, in order to burn, a fuel
needs to be mixed with the oxygen in the air. And at the moment, this fuel
doesn't have enough oxygen mixed with it in order
for that to happen. This fuel's not very volatile. This fuel, however, is very
volatile, which means it evaporates constantly. It's evaporating more quickly,
and...