Motoring1 min ago
Cold Fusion
After reading the post below about developments in Cold Fusion, I must ask, What is Cold Fusion?
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I would have thought one of the regulars would have answered your query by now...
Cold fusion references a (until recently) highly thoretical method of producing atomic energy. The proposed process is also known, in scientific circles as LENR (Low Energy Nuclear Reactions). Unlike hot fusion where the heat is released in the form of radiation (and required extremely hot temperatures), cold fusion produces energy in the form of heat and is claimed by at least three researchers, to occur with inexpensive equipment at room temperatures. As with many other new technologies, claims and counterclaims rage back and forth over the validity of tests...
Cold fusion references a (until recently) highly thoretical method of producing atomic energy. The proposed process is also known, in scientific circles as LENR (Low Energy Nuclear Reactions). Unlike hot fusion where the heat is released in the form of radiation (and required extremely hot temperatures), cold fusion produces energy in the form of heat and is claimed by at least three researchers, to occur with inexpensive equipment at room temperatures. As with many other new technologies, claims and counterclaims rage back and forth over the validity of tests...
Nuclear power stations make energy by splitting uranium atoms, this is fission. But you can make evergy by joining light elements like Hydrogen to make a heavier one like Helium. This is fusion and is the way the sun makes energy.
But although the raw materials are abundant and fusion is inherently safer it's very hard to do.
As you'll see 2 positively charged nucleii are brought closer and closer together the electric force pushes them away with incredible strength. They have to get very very close before the strong nuclear force can grab them and the nucleii become fused.
This means the nucleii need to be moving fast - very fast and that means very hot, temperatures similar to the inside of the sun.
This has been achieved, the JET tokamak
( http://en.wikipedia.org/wiki/Joint_European_To rus )
managed 16 MW although more energy had to be put in than that to get it to work. The next one ITER will "make a profit"
Cold fusion was first claimed in 1989 - it was claimed that small amounts of fusion had been seen simply by electrolysing heavy water with palladium electrodes.
This would be surprising as there's no known way of getting past the electric repulsion of the nucleii other than force so it basically contradicts known physics.
Two other teams in the US said they'd seen it too and then said "whoops sorry" and basically it all blew over.
There is however a continuing undercurrent of research, some firms like Toyota are playing the CF lottery and it regularly pops up in popular science programs.
Fusion will be running our children's world but I don't think it'll start in a test tube, it'll start here:
http://www.iter.org
But although the raw materials are abundant and fusion is inherently safer it's very hard to do.
As you'll see 2 positively charged nucleii are brought closer and closer together the electric force pushes them away with incredible strength. They have to get very very close before the strong nuclear force can grab them and the nucleii become fused.
This means the nucleii need to be moving fast - very fast and that means very hot, temperatures similar to the inside of the sun.
This has been achieved, the JET tokamak
( http://en.wikipedia.org/wiki/Joint_European_To rus )
managed 16 MW although more energy had to be put in than that to get it to work. The next one ITER will "make a profit"
Cold fusion was first claimed in 1989 - it was claimed that small amounts of fusion had been seen simply by electrolysing heavy water with palladium electrodes.
This would be surprising as there's no known way of getting past the electric repulsion of the nucleii other than force so it basically contradicts known physics.
Two other teams in the US said they'd seen it too and then said "whoops sorry" and basically it all blew over.
There is however a continuing undercurrent of research, some firms like Toyota are playing the CF lottery and it regularly pops up in popular science programs.
Fusion will be running our children's world but I don't think it'll start in a test tube, it'll start here:
http://www.iter.org
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