1. Joined
    07 Dec '05
    Moves
    13469
    03 Nov '11 14:41
    What is vacuum energy and what causes it.

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

    Hendrik Brugt Gerhard Casimir has caught my interest lately and I'd like to know more about it. Any insightful comments are welcome.

    http://en.wikipedia.org/wiki/Casimir_effect
  2. Germany
    Joined
    27 Oct '08
    Moves
    3087
    03 Nov '11 15:17
    It has to do with virtual particles, but you'd have to study some quantum electrodynamics to understand better what they are. Feynman himself actually wrote an excellent book on QED for laymen, if you're interested you can get it - it's not very costly. Don't remember if it addresses vacuum energy, though.
  3. Joined
    07 Dec '05
    Moves
    13469
    03 Nov '11 23:33
    Originally posted by KazetNagorra
    It has to do with virtual particles, but you'd have to study some quantum electrodynamics to understand better what they are. Feynman himself actually wrote an excellent book on QED for laymen, if you're interested you can get it - it's not very costly. Don't remember if it addresses vacuum energy, though.
    I've heard of his book. Thanks.
  4. Subscribersonhouse
    Fast and Curious
    slatington, pa, usa
    Joined
    28 Dec '04
    Moves
    52619
    19 Nov '11 13:27
    Originally posted by Metal Brain
    I've heard of his book. Thanks.
    Here is something new in the Casimir effect: Turning virtual particles into real photons:

    http://www.newscientist.com/article/mg21228392.700-light-pulled-out-of-empty-space.html
  5. Joined
    07 Dec '05
    Moves
    13469
    19 Nov '11 13:59
    Originally posted by sonhouse
    Here is something new in the Casimir effect: Turning virtual particles into real photons:

    http://www.newscientist.com/article/mg21228392.700-light-pulled-out-of-empty-space.html
    Interesting article. It says kenetic energy is being converted into photons from the vacuum of space. I'm not sure if it explains dark energy, but this is very interesting.

    Thanks for sharing!
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