Re: A silly fact about an atomic clock that relativist never want you to know.



"Spaceman" <spaceman@xxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:DoGdnbYVrev-EubVnZ2dnUVZ_h3inZ2d@xxxxxxxxxxx
Uncle Ben wrote:

Yes, speaking loosely, acceleration is a g-force event. So is being
in a gravitational field. But in this case these two cancel each
other. That is the point.

Have you ever seen video of astronaut training in which they are in
an airplane that is carefully following a parabolic arc that
imitates the path of a projectile falling freely? The guys are
floating around in the plane as it there is no gravity. Note the
"as if." Yes, there is still gravity at work, but there is also the
acceleration at work. And they cancel each other.

So you admit the "atom" in freefall, will not fall inside the clock
that is also in freefall.

That would be excellent. Then the microwave cavity could be
reduced to a much smaller size and the overall complexity of
the clock reduced considerably. A freefall environment is an
excellent place to build accurate clocks, as it is completely
isolated from the effects of changing gravity or vibrations
in the environment.
.



Relevant Pages

  • Re: Can inverse gravity waves cancel out Earths gravity in selected areas?
    ... is zero gravity because gravitational fields cancel. ... L-5 is a particular point at which a small object can orbit ... If the fields actually cancel out at any of the Lagrange points it would ... It is practically impossible to cancel out gravitational waves but even ...
    (sci.physics.relativity)
  • Re: Can inverse gravity waves cancel out Earths gravity in selected areas?
    ... build a ship to hover or simply leave the gravity well of the Earth ... of gravitational waves might indeed be possible, ... cancel them, nor is it clear why we'd want to. ... of a charge, you have to introduce an opposite charge, but there's no ...
    (sci.physics.relativity)
  • Re: Can inverse gravity waves cancel out Earths gravity in selected areas?
    ... Active cancellation of gravitational waves might indeed be possible, but given that we haven't even detected gravitational waves yet, we're a long way from being able to cancel them, nor is it clear why we'd want to. ... To cancel the central field of a charge, you have to introduce an opposite charge, but there's no negative gravitational charge. ... you can cancel the earth's gravity in a limited region by suspending an extremely massive object above the earth. ...
    (sci.physics.relativity)
  • Re: Can inverse gravity waves cancel out Earths gravity in selected areas?
    ... There's a difference between a wave and a central field. ... cancellation of gravitational waves might indeed be possible, ... from being able to cancel them, nor is it clear why we'd want to. ... you can cancel the earth's gravity in a limited region by ...
    (sci.physics.relativity)
  • Re: BT sheddi to the rescue
    ... Firefox had no problems downloading the newsgroups, gravity is still not being allowed to get through to news.btinternet.com. ... sounds like a firewall thing. ... the hootering web page won't let me cancel the order because it says "We ...
    (uk.rec.sheds)