Thursday, 25 July, 2002, 11:15 GMT 12:15 UK Fusion experiment disappoints The idea that we could build nuclear fusion reactors that relied on the extraordinary pressures and temperatures experienced inside tiny, collapsing bubbles in a liquid has suffered a grievous blow. New calculations all but rule out the controversial suggestion, made earlier this year by US and Russian researchers. We've shown that chemistry occurs within a collapsing bubble, and that it limits the energy available during cavitation Kenneth Suslick They fired sound waves through acetone, causing minute bubbles in the liquid to form and then collapse at temperatures of millions...