What kind of torch burns a flame underwater?
What could this have been?
Answer:
There are acetylene/oxygen torches designed for use underwater. The acetylene is the fuel, and the oxygen provides the oxygen needed to sustain a flame.
I've seen this too, they light it above water and it looks like a piece of pipe; I think it might be magnesium, or magnesium alloy (which will burn under water with a bright light). But I'm not positive. I was told by a welder that an oxyacetylene torch will keep lit under water as well.
In fact, any flame torch that has an oxygen supply can burn under water. All you need to make fire is gaseous oxygen and fuel, even under water!
An acetylene torch is a good example of this.
some reactions with water produces high amount of energy , some times in the form of light. like Na ( sodium) reacts with water produces glow.
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