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Quantum Gravity measurement

  1. Jan 13, 2007 #1
    A Stanford researcher has measured the effect of gravity using quantum mechanics:


    Can this shed new light on the gravitational constant, dark matter, the quantum vacuum, or even the universe?

    Why did they have to use lead as the weight, anyway? Wouldn't any equivalent mass do?
  2. jcsd
  3. Jan 13, 2007 #2
    Sounds interesting. Anyhow, to answer your questions we should read the Science, vol 315, p 74 article they are referring to. I will check it out when i am at work on monday.

  4. Jan 15, 2007 #3
    I think they used the lead peice because of its mass and density.
  5. Jan 19, 2007 #4
    This is why I think the discovery and bulk manufacture of predicted stable ultra-heavy elements like Unbihexium (Atomic Number 126) could be achieved, then their unprecedented mass-densities could open new potential in scientific investigation.
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