Thanks Brooke. I'll look into it. It would be interesting to try to develop a frequency standard from a test tube of water.
Bob ________________________________ From: Brooke Clarke <bro...@pacific.net> To: Bob Stewart <b...@evoria.net>; Discussion of precise time and frequency measurement <time-nuts@febo.com> Sent: Sunday, July 6, 2014 12:20 AM Subject: Re: [time-nuts] Magnetic Resonance Spectrometer - redux Hi Bob: This is very similar to a "proton precession magnetometer" that measures the total magnetic field, not in vector components. There's a lot of amateur designs for these that you could use as the bases for a MRS. There is an article in the same publication for a tube type frequency standard that can be used to drive a line powered wall clock. The Magnatron magnets were probably Alinco, so if you upgraded to modern magnets it might be much more stable. http://en.wikipedia.org/wiki/Proton_magnetometer http://en.wikipedia.org/wiki/NMR Have Fun, Brooke Clarke http://www.PRC68.com http://www.end2partygovernment.com/2012Issues.html http://www.prc68.com/I/DietNutrition.html Bob Stewart wrote: > First, an apology. When I changed the topic on my original post, I thought > that would be OK. Apparently that's still a thread-jacking. Sorry. > > I'm still interested in this Magnetic Resonance Spectrometer thing, though. > On page 335 of the pdf linked below by Dave, there's an experiment with an > MRS using water and the magnet from a magnetron available back then. > Apparently the resonant frequency of hydrogen nuclei in water is 6.131325 MHz > in that magnetic field. Did anyone ever pursue this with the idea of creating > a frequency standard, or was the technology just too primitive at the time? > Perhaps it's a repeatability problem from the magnetic flux standpoint? I > can guess that temperature changes would cause enough of a flux strength > change to cause a problem, but that's just a guess. > > Bob - AE6RV > > ________________________________ > From: DaveH <i...@blackmountainforge.com> > To: 'Discussion of precise time and frequency measurement' > <time-nuts@febo.com> > Sent: Saturday, June 28, 2014 1:09 PM > Subject: Re: [time-nuts] Loran, GPS, Lightning, Timing > > > A PDF of the 1960 book can be found here: > > http://www.sciencemadness.org/library/books/projects_for_the_amateur_scientist.pdf > > Dave > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
