Re: Gravity at the Molecular Level

Cephalobus_alienus@xxxxxxxxxxx wrote:

On Feb 24, 5:14=A0pm, Richard Saam <rds...@xxxxxxx> wrote:

Your multi posted scenario
will probably be executed by someone.

In a parallel effort
would you consider an alternative
with mostly chemistry
and =A0a little observational physics
to =A0test the same
left vs right foot Eotvos hypothesis.

Ammonia is well known to vibrate/resonate between its two forms
with the three hydrogen at 105 degree from the center nitrogen
overcoming a rather small potential barrier at room temperature
at a very significant frequency ~1E10 /sec

Now, is there a tri amine which differs in chirality
between these two structures?
If so replace one or more of the 3 hydrogens
to obtain this chirality.

2.2'-Dipyridyl
Number 11.751.14 in Janssen Chimica
$50/100gram
may be a starting material of choice.
There are thousands of other triamines.

1. purify as well as possible
2. place in a (~50 to >100000 g's) centrifuge
in a completely racemic liquid or gaseous phase.
3. solidify the amine in the high g condition (by cooling).
This would freeze the racemic/chiral character of the amine.
4. Analysis the amine solid for racemic/chiral character as a function
of g condition. (I would assume some type of optical rotation method)
5. Relate results to the Eotvos criteria.

A kind of reverse Eotvos.
What do you think?

Interesting idea.
1) Omit the freezing, which would introduce artifacts.
2) Introduce a polarimeter into the optical system of an
analytical ultracentrifuge to perform measurements in real time.
3) Artifacts from stress on the quartz windows could be a problem,
requiring careful controls.
4) Figure out some way of publishing the negative results in the
absence of any solid theoretical motivation for performing the
experiment.

Perhaps I didn't make myself sufficiently clear. Yours is a
meaningless expeiment. It has no basis in theory. If it did it would
have no hope of rising above noise for what it purports to
differentially measure - by at least 9 orders of magnitude beyond
current technology. Here's a hint, Jerry: measurements looking below
kT require a damned good reason for claiming net sensitivity.

The primary limit to sensitivity of Adelberger's ambient temp Eotvos
balance is the random jingle jangle of its substituent atoms. The
next largest source of noise is light pressure from the inteferometer
that is its detector - and he uses photon counting. Newman wants to
run an Eotvos balance just above the lambda point of helium. That
would reduce kT background noise by about two orders of magnitude.
The last reported run detected a few atoms of iron on a half brass
washer used as a counterweight. Stray fields are a bitch at 10^(-15)
differential sensitivity. The Earth is rich with them.

You're gonna use a vibrating ultracentrifuge? Do you plan to balance
the rotor all the way round to less than a picogram static an dynamic;
before and during crystallization? Did you ever weigh out a picogram,
Jerry? Moments of inertia change with sample density and mass
distribution during recrystallization.

Tilt.

--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/lajos.htm#a2

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