I have heard a statement of einstein when he said that that in a glass of water their has enough energy?

Question

to power a town a size of London for a week, if that is true and we humans still don't know how to use this energy, what do you think when we will be able to manipulate this energy what will we be capable of?(i mean earth is 70% of water)

Answer 1

E = dm c^2; where dm = m1 - m0 is the change in rest mass from before fission/fusion to after fission/fusion.  That change in mass is converted into energy E.  c = 3E8 mps, light speed.  Let's see how much energy we'd get if dm = 1 kg of water.

E = dm c^2 = 1*9E16 = 90,000,000,000,000,000 Newton-m of energy (Joules).  From one kg of converted water, we can get 25,000,000,000 or 25 billion KW-hours of energy.  That works out to be enough power to light up 250,000,000 or 250 million 100 watt light bulbs.  I think that'd light up London and most of England.

And all that came from 1 kg of water...if we could split or fuse its atoms.  But we can't.  Best we can do is split heavy elements, like uranium and plutonium, and fuse light elements like hydrogen, helium, and lithium.  But even with these, we can create a heck of a lot of energy in nuclear power plants and atomic weapons.  All because of E = dm c^2.

Answer 2

There is that much energy in the mass of a glass of water.  However, that doesn't mean it can be released.  In order for that to happen, every bit of matter in the water must  be destroyed--electrons, protons, neutrons, etc.  The only reaction that can do that is a matter-antimatter interaction.  First, no-one knows how to get that much antimatter, and second there would be no way to contain it.  It is not ever likely to happen.

Answer 3

Breaking connection between  H and O unleash heat energy

Answer 4

Because its not true.

There may be a mass equivalence of the energy, but there is no quantum process by which it can be accessesed. The atoms consist of bound protons and neutrons - which are stable - and electrons - also stable.

Its a bit like saying - look there is a bucket of dirt - there is everything in there you need to make Einstein. So why can't you?

Answer 5

Who knows, in future we might develop energy conversion to that extent... I foresee this all happening in some/all form.

Answer 6

I don't know if it was Einstein or someone else, but the reference is to the very large energy equivalent of mass. E = mc^2, and c^2 is 9 x 10^16, a very large number indeed.

Nuclear fission and fusion processes make use of mass-energy conversion, and that is why a very small amount of nuclear fuel can produce a lot of energy. But even in most practical nuclear processes, far from all the mass is converted into energy. That does happen in particle-antiparticle annihilation, but there are no practical processes that make use of that.