Answers are grounded in this paper and cite their sources.
A marginal oscillator, developed to measure or control magnetic fields in the flux-density range from 50 mT down to 1 mT by using nuclear magnetic resonance (NMR), is described. This provides additional signal-dependent modulation of the feedback conductance, considerably increasing the signal-to-noise ratio. Observing proton resonance in an aqueous CuSO/sub 4/ solution, a sample volume of about 2 cm/sup 3/ has led to a signal-to-noise ratio of 50 dB obtained in a field with a flux density of 15 mT.>
No takes yet. Share an insight, caveat, or question.
Kurt Weyand (1989) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: