Originally posted by Aelita
From Wikipedia:
The water fuel cell was claimed to produce several times more energy than it consumed
Case closed
Don't jump to conclusions like that.
Water molecules already hold an amount of energy.
Its totaly posible to convert a molecule to a substance that can be used as fuel, by inputing a certain amount of energy, that is lower then what
you'll get out of the end product, since the original substance in itself also holds an amount of energy.
If it takes 1 part of energy to convert a substance that holds 10 parts of energy to a form that can be used as a conbustable fuel, the final product
has the potential to output 10x more energy then you put in to convert it.
People that comment on these kinds of things keep slamming it with laws of conservation of energy while they keep forgetting that when converting
water to useable energy sources, the starting product, water, already has a serious energy potential.
Seems people like you have to be reminded of atomic bombs from time to time.
You have a nasty block of radioactive fuel, that didn't take tons of energy put into it to be refined in a lab.
Yet when exploded in its simplest form, a bullet like projectile fired at a block of this junk, will give an explosion worth kilo of not megatons of
TNT.