I am reading your books on earth field magnetic resonance, and Discovering the Quantum.  To get more out of HackaDay.IO, it helps if you describe your interests.  You do not have to build anything if you are tired. But you can perhaps help others and begin to network.  Your writing style is clear and informative.  You know your subjects and convey them well.  There are a lot of young people on HackaDay, as well as many seasoned designers and builders.  If there are things you want to do, tell me and others and we can try to help.

I am just about ready to try my own magnetic resonance experiments. But I decided to also cover electron spin resonance methods.  I found an older book on paramagnetic resonance, and the rather expensive methods then are off-the-shelf items at low cost now.  Except for the low temperatures.  I grew up the statistical mechanics and thermodynamics and gravity, so I am going to try to leverage statistical methods to reduce the temperature.  If we believe it, the noise is from temperature and can be quantified in information terms. But the opposite is true.  information can be used to reduce the effective temperture, even if a thermometer says it is hot.  I start with something like that and then spend a few years or decades working out the details and possibilities.  It does not always lead to what I expected, but it is fun nonetheless.

Thanks for writing those books.  I did not read all of yours.  I am not ready for God yet.  If you had not had trouble, I would not have found you.  It you are trying to be anonymous, I will remove this note. But I think people should know who you are and what you have contributed.

I use software defined radio methods and I think the Adalm Pluto and some of the other transmitter receivers can be programmed with inexpensive interfaces to driver circuits, and using the radio receivers with low noise wide band preampliers that are good and cheap now - one can build a range of magnetic resonance tools.  Most of these SDRs. besides handling the viewing and analysis of RF up to 6 GHz now (more if you have a bit of money), are sampling in the 10-20 Msps range, so your 2145 Hertz signals can be massively oversampled and pieces used to solve for the frequencies and decay.  I want to do that kind of statistical analysis.  I have done many hundreds of little experiments but never on NMR data yet.   My notes at GravityNotes.Org are a bit out of date, but I plan to update on the last couple of years and add many new groups I am following.

I want to try putting a permanent magnet on a servo motor or microstepper or simple variable speed motor to provide a known magnet variation.  Three or more to remove the ambiguity of only having one polarizing field.  I think that is hubris that people think they have to do the whole thing with only one magnet.  Linear actuators and strong permanent magnets are easy to control, and I found ways to do the data gathering, calibrations and the field mapping.

I think that using permanent magnets to bias the earth field can be used effectively to make a better magnetometer.  I want to try multinuclear standard targets to allow very precise measurement of the the earth's magnetic field on three axes at very hign sampling rates (Msps and Gsps).  I now know it is possible.  If I only had more time for all the things that are possible when data and processing data are easy.  :)

Richard Collins, The Internet Foundation