On the Process of Space Quantization

The effect of a rapidly varying weak magnetic field on an oriented atom possessing nuclear spin is discussed. The results are applied to an experiment by Frisch and Segrè. It is shown that by methods embodying these principles one can measure nuclear spin even when the h.f.s. separation is very small. A possible further application is discussed whereby it is possible to measure the sign of nuclear magnetic moment vector with respect to the spin vector.