Re: Tiny mass detectors come out of the cold

"Uncle Al" <UncleAl0@xxxxxxxxxxxxx> wrote in message
news:45C4D464.DF86478F@xxxxxxxxxxxxxxxx
"Sam Wormley" <swormley1@xxxxxxxxx> wrote in message
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Tiny mass detectors come out of the cold (Feb 2)
http://physicsweb.org/article/news/11/2/4

Physicists in the US have made the first "nanocantilever" that can
measure extremely small masses under everyday conditions - unlike
previous devices that needed a high vacuum or cryogenic temperatures
to
work. The result, which comes from Michael Roukes and colleagues at
the
California Institute of Technology, could revolutionize the way the
masses of tiny particles are measured.
... and...
Roukes and colleagues demonstrated that their cantilevers
can measure masses on the attogram scale with a resolution
of just 100 zeptograms (10-19 grams) - a new record under
these conditions.

[hanson]
Now that is big time!... This may lead to a vast improvement in the
metrology for the determination of Newton's G in an experimentally
different way then were/are the other approaches... and influence
the determination and defintion of mass...

[Al]
[snip crap]
[Reinstated because Al doesn't know what he is talking about]

[hanson]
..... and it may bring about
a solution for the curse to get out of the nasty experimental F, N_A
and G inter dependence which we have discussed earlier here in
http://groups.google.com/group/sci.physics/msg/55bc6e550452f7fa
and in other still earlier posts wherein in said::
....it so hard to get the same experimental accuracy for Faraday's const.,
Avogadro's Number and Newton's G (F, N_A and G), that we are used
to for other fundamental constants... ... and why?....because all 3 are
interlinked and hence another quite different relation and experiment
has to be found/done to get out of that cursed F, N_A and G inter
dependence?...

[Al]
Horse***.
Big G cannot be so measured. Differential 1/r^2 dependence can be
measured. GM is not Big G.
Definition of mass depends on accuracy, precision, and a transferable
fiducial value. All primary physical constants - except mass - now
trace to quantum mechanics or defined value (e.g., lightspeed). The
problem of defining a new mass standard to replace the Paris kilogram
remains intractible. There is no "mass comb" to allow usable
macroscopic amplification of a nanoscopic mass standard in the manner
of an "optical comb" for frequency and length.

[hanson]
.... that only seems to you to be that way, because you have no
idea what goodies do come the patent lawyers desks, while
you only rely on what already has been done, like in your trite
citations from whence you project your Horse*** in the hope
that it will pan out... ahahaha... ahahaha... It sounds like I hit a
raw nerv in you. But don't worry,Al, it will not interfere with your
benzil-chirality. Other groups are way ahead of you in search
of the same goal. The difference between them and you is that
they do not brag about their failures... Thanks for the laughs.
ahahaha... ahahanson





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