U.S. Will Give Cold Fusion Second Look, After 15 Years
By KENNETH CHANG
NY Times
Published: March 25, 2004
Cold fusion, briefly hailed as the silver-bullet solution to the world's energy problems and since discarded to the same bin of quackery as paranormal phenomena and perpetual motion machines, will soon get a new hearing from Washington. Despite being pushed to the fringes of physics, cold fusion has continued to be worked on by a small group of scientists, and they say their figures unambiguously verify the original report, that energy can be generated simply by running an electrical current through a jar of water.
Last fall, cold fusion scientists asked the Energy Department to take a second look at the process, and last week, the department agreed.
Fusion, the process that powers the Sun, combines hydrogen atoms, releasing energy as a byproduct. In March 1989, Drs. B. Stanley Pons and Martin Fleischmann, two chemists at the University of Utah, said they had generated fusion in a tabletop experiment using a jar of heavy water, where the water molecules contain a heavier version of hydrogen, deuterium, and two palladium electrodes. A current running through the electrodes pulled deuterium atoms into the electrodes, which somehow generated heat, the scientists said. Dr. Fleischmann speculated that the heat was coming from fusion of the deuterium atoms.
Some cold fusion scientists now say they can produce as much as two to three times more energy than in the electric current. The results are also more reproducible, they say. They add that they have definitely seen fusion byproducts, particularly helium in quantities proportional to the heat generated.
posted by Richard at
Thursday, March 25, 2004
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