pullbangdead said:[quote author=PyroEric link=1218511135/20#23 date=1224187486]As long as there is a net loss of mass from energy output there wouldnt be a violation of any existing physical laws. Hydrogen in the sun goes from hydrogen to helium and then back to hydrogen again many times in a cycle before being fused into heavier elements, if it didnt the sun would use up all its fuel in a fraction of the normal time.
There may be a way to split compounds with very little energy compared to the energy of reacting them chemically, perhaps causing them to make up the balance with their mass from some yet to be understood mass energy conversion.
Particles are constantly popping in and out of existence in numbers too large to comprehend.
Energy can not be created or destroyed, but these particles popping in and out of existence have mass and energy, and seemingly are created and then destroyed, perhaps their energy could be harnessed.
If people never kept an open mind and dared to think differently or take a different approach than what mainstream science tells them they should think like, there would be very few advancements.
Most of the great minds throughout history were regarded as nuts, heretics, or were told that what they were trying to do couldnt possibly work. In science its important to keep an open mind and not just repeat the standard rhetoric, though I agree that in most cases such a reaction would probably be impossible with mundane means.
The highlighted part is really quite wrong. If you have a source for that, that'd be great, but everything I've ever seen (I checked Wikipedia too, just to be sure), says the sun will last billions of years on it's supply of hydrogen, because it's actually a VERY slow fusion reactor. From Wikipedia (always the quickest thing to get numbers from), 3.4(10)^38 hydrogen atoms fused per second, 8.9(10)^56 hydrogen atoms in the sun. That's 2.6(10)^18 seconds, or, about 83billion years. (The sun is only thought to live about 10billion years though, so I can only assume that it's because only about 10% of the hydrogen in the sun will be fused before there's not enough in the core anymore). So no, it doesn't need recycled protons.
And really what does that have to do with breaking water and reforming it? All you're doing is breaking a chemical bond and reforming it. That chemical bond has the same energy before it was broken as it does after it was reformed. Yeah, I get the whole think outside the box thing, got all that, but where is the extra energy coming from? You input energy to break the bond, and the chemical reaction releases the energy that you put in when it goes back to a lower energy state. If it was 100% efficient, which it will never be, that would be one thing. But you're talking about getting MORE energy back out than you put in. Where does that come from?
You're not getting a loss of mass, either. I guarantee, if you measure the mass of the water before and after breaking the bonds and reforming them, the mass will be the same. And no EXTRA energy will have come out, only the energy that you put in by breaking the bonds.
But there is no "way to efficiently break the bonds" and "inefficiently put them back together". Bonds have a set energy, when you break one, that amount of energy is absorbed and given to the system as energy and/or entropy. When you form a bond, entropy decreases and the bond absorbs energy. With the chemical reactions, bonds are formed and broken, and the energy changes forms, with entropy coming into play as well. When you get down to the crux of it, there's no matter of efficiency with it, because fundamentals control it.
Particles do come in and out of existence, but a fundamental change happens in the universe when that happens. Entropy and energy. Entropy increases, and energy is conserved. Interchanging mass/energy don't change that equation.
I get the whole outside the box thing, and Galileo was persecuted for his beliefs and all that. I get it. But you have to understand what's in the box before you can think outside of it, and this whole trend of ideas doesn't tell me that that's the case.[/quote]
Well in that case you better think outside of the box that your box is inside of.
If the sun wasnt going through the fusion cycle and recycling hydrogen, dont you think the 10 billion year life span would be less? As you said you assume that only about 10% of the hydrogen is being fused.
It stands to reason that if only a certain percent of the suns mass will be fused, that it would last longer if the hydrogen is recycled rather than used once, right? So because you decided that the sun only uses 10% of its mass to carry out fusion, that it doesnt need recycling, and that it couldnt possibly be fusing a smaller portion like say 3-5% with recycling to achieve the same lifespan.
The size of the sun makes it tricky for them to project the lifespan, so they just go with the 10 billion or so year estimate. If it turns into a white dwarf it will be around much longer than if it goes supernova and vaporizes the solar system. Estimates and projections are just that.
Fusion of hydrogen results in around a 3% reduction in mass from energy release. Go ahead and try to measure the change in mass from chemically reacting hydrogen to release a tiny fraction of the energy that would be released from fusing it. And yes if you kept burning the hydrogen and splitting the water with electrolysis there would be no mass change, but that is not what I am getting at.
You can not say definitively that there is no way to break a chemical bond using less energy than would be released by reforming the compound. I am not saying people on youtube can do it with their PVC pipe machines.... Where would the energy come from is as good of a question as where the universe came from.
The ancient Greeks thought they were right about their views on the universe, then the world used to be flat and the center of the universe for quite a long time, and its been mathematically proven that bumble bees cant fly. Dont tell the bees that, and dont tell the universe that it violated the law saying that energy can not be created or destroyed.
If an entire universe just popped into existence, what says we cant spontaneously generate some energy?
No one really knows anything, they might think they know, but they dont, and probably never will. We dont even know how big the universe is, let alone what it is, or why it is.
There is a difference between thinking you 'get it', and realizing that you cant truly 'get' anything.
As for the topic of lasing water, I do believe it would be possible to make a laser using water and Cerenkov radiation, I cant wait until they make plutonium reactor cells for lasers.
You could probably also get a light emission from a 'doped' water based solution and pulsed microwave bursts. Maybe micro cavitation of steam bubbles would produce a space for a powerful magnetron to create little plasma bubbles that would produce light, letting it run at relatively low temperatures with very high internal pressure for a high energy density laser.