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The Energy of Empty Space != Zero

Raindeer writes "Lawrence Krauss (well-known physicist and author of The Science of Star Trek) invited a group of 21 cosmologists, experimentalists, theorists, and particle physicists and cosmologists. Stephen Hawking came; three Nobel laureates, Gerard 'tHooft, David Gross, Frank Wilczek etc. He wrote about the conclusions of this session in Edge; in short: 'there appears to be energy of empty space that isn't zero! This flies in the face of all conventional wisdom in theoretical particle physics. It is the most profound shift in thinking, perhaps the most profound puzzle, in the latter half of the 20th century. And it may be the first half of the 21st century, or maybe go all the way to the 22nd century. Because, unfortunately, I happen to think we won't be able to rely on experiment to resolve this problem.'"

4 of 362 comments (clear)

  1. The Casimir effect by MC68000 · · Score: 5, Interesting

    The perfect demonstration of zero point energy is the Casimir effect, which has actually been observed in a laboratory.

    http://en.wikipedia.org/wiki/Casimir_effect

    --
    E = m c^3 Don't drink and derive E = m c^3
  2. Re:Zero-point energy? by 0xABADC0DA · · Score: 5, Interesting

    A bug trap uses no energy and does not violate any thermodynamic law, yet it works. It just creates a condition where the bug is more likely to get in than out. Zero-point energy could be the same kind of deal, where you make a construct that allows you to 'collect' the energy in some way. This also would not violate any theory of balance if you consider the whole system including where this energy comes from. And if this is from outside what we consider our universe, for example some meta-verse or a bug in the simulation of ours, then to us this would seem indistinguishable from free energy.

    I'm not saying that a 'zpm' could be built and generate free power, but to remind that laws of balance only hold over closed systems. For example if the room you postulate is connected to the atmosphere you can harness the 'uniform pressure' as it changes over time as low/high pressure systems pass by. Thus, you are getting 'free energy' from outside the system, drawing from the global heat. From the perspective of the room this is energy out of nowhere or free energy.

  3. Of course empty space energy is not zero by trelayne · · Score: 5, Interesting

    This is already known in theoretical quantum physics. In fact NASA has funded research into it with the long range goals of achieving propellant-less propulsion.

    The Casimir Effect is also an experiment that is touted as ultra-precise proof of the phenomenon.

    And there are a number of tantalizing theories that are built on its existence and have been published in the usual top ranking physics journals. Some suggesting that vacuum energy is responsible for the very structure (and hence stability) of the physical universe.

    For example: http://www.calphysics.org/ explores the possibility that vacuum energy fluctuations account for mass (even particle mass!), inertial forces and [through an elegant corrolary] gravity. This opens up possibilities that go well beyond star trek.

  4. Texas sharpshooter fallacy by dino213b · · Score: 5, Interesting

    This sounds like a classic setup. A star trek "scientist" wants to find a favorable answer to reconcile the real world with his fantasy, so he:

    • arranges a think tank to meet at a conference
    • sets a time constraint on the think tank (conference time limitation)
    • asks THE question he wants answered
    • waits until the end of this time-constrained conference for the answer

    And the end result - a nice juicy "yeah..sure.. align the phase.. inverters" answer that he sought in the first place. Call me a skeptic, but that sounds like the classic T.S.F. http://en.wikipedia.org/wiki/Texas_sharpshooter_fa llacy . By tampering with the normal course of the scientific method, a non-scientific answer was produced. Anyone else see a problem here?

    I love imagination as much as the next guy..but c'mon...