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The behavior of partly polarized beams of slow neutrons as regards their precession on passing through homogeneous magnetic fields has been investigated. From the experiments it is concluded that the neutron has a magnetic moment not far from 211840 Bohr magneton and that the sign is negative. Further, the precession of neutrons inside magnetized iron was investigated; it was found that the field accounting for the observed rate of precession is more than 100 times the actual field strength H and actually of the order of magnitude of the magnetic induction B.
Frisch et al. (Sun,) studied this question.