The neutron yesterday, today, and tomorrow

The current status of the study of the fundamental properties of the neutron is discussed. Experimental results on the neutron lifetime, β-decay angular correlations, electric dipole moment, and form factor are presented, and comparison with theory is made. Major experimental techniques are described. Exotic neutron features, such as the electric charge, baryon number nonconserving decays, etc., are discussed. The properties and applications of ultracold neutrons, and related problems, are discussed in detail. Some new ideas are suggested and research programs outlined.