I have heard of this technique but am ignorant of how this is done. A photo or diagram would help.
god nows if u know tell me
My old lady waiting up for me at 3 a.m with a bat!
Mythbusters tried to make a flash boiler cannon, so check that out. It didn't work all that well but it is an interesting idea.
A 'flash boiler' is a boiler chamber that is heated to high temperatures so that, when a small amount of water is introduced, it 'flashes' almost instantly to steam. There are a couple of articles about them on the web. The only application that I, personally, have ever seen was to generate some fairly impressive shock waves to simulate large explosive blasts. Doug
