Over the last decade, physicists working with extremely cold gases have created nine different frictionless "superfluids" with bosons, elementary particles with integer spins (1, 2, etc.). In a superfluid, particles do not lose energy when they flow, for example, by heat due to friction.Up next: researchers will find a fashionable way to combine polka dots and plaid.
But creating a superfluid made of subatomic particles called fermions, which include protons, neutrons and electrons and have half-integer spins (1/2, 3/2, etc.), initially seemed impossible. That is because a quantum mechanical law prevents identical fermions from sharing the same state of being. For example, having the same location or momentum - conditions required for superfluidity.
But recently physicists have discovered that fermions can be coaxed to pair up, so that their spins add together for a split second, so the pair behaves like a boson.
Jul 23, 2004
news from nerdland
We're now a step closer to room-temperature superconductors, which I know has you foaming and frothing.
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If I may take a moment to recognize an old friend--buckyballs.
From them scientists learned how to elongate various atomic structures into "nanotubes." The main advantage is that the carbon bonds allow for the superconductivity and absorb heat, without overgenerating it.
Say hello to the future of monitors.
The future of monitors? Monitor lizards? Baby monitors? The Monitor and the Merrimack? Elaborate, por favor.
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