Jul-05-10
Your future fridge may keep food cold by using a magnet. It would use less power, run quieter, and wouldn't contain harmful hydrofluorocarbons.
The magnetocaloric effect uses the phenomena whereby a changing magnetic field within a material causes it to get colder.
The trick, according to Sujoy Roy, a physicist at the Lawrence Berkeley National Laboratory in California, is to find an alloy that exhibits the effect at room temperature.
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