Stewart,
Here's a link to some of the research activities on this by Mueller's team:
http://matterwave.physics.berkeley.edu/Publications?highlight=%28compton%29%7C%28clock%29
Regards,
Bill Powell
-------- Original Message --------
Subject: Re: [TICTOC] new type of atomic clock
Date: Wed, 13 Feb 2013 17:01:55 +0000
From: Stewart Bryant <[email protected]>
Reply-To: <[email protected]>
To: <[email protected]>
CC: <[email protected]>
This is way off topic so apologies, but all the derivations I have seen
are first order, could you point me to a higher order version?
Stewart
On 12/02/2013 18:07, Danny Mayer wrote:
Please note that E = mc^2 is a first-order approximation so be careful
about this.
Danny
On 2/12/2013 12:23 PM, Yaakov Stein wrote:
Hi all,
We all know that in relativity theory E = m c^2
and that in quantum mechanics E = h f (where f is the wave frequency),
so that a mass m corresponds to a frequency f = m c^2 / h (called its
Compton frequency).
However, until now it has not been practical to directly relate
frequency and mass,
because c^2/h is just too big.
Well, in a new article
_http://www.sciencemag.org/content/339/6119/554.abstract_
researchers from Berkeley have been able to build a clock with an
accuracy of E-9
that directly connects mass and frequency.
Eventually this may lead to linking the definitions of the second and
the kilogram.
Y(J)S
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