Low temperature physics is of increasing technological importance in relation, for instance, to large magnets, rocketry and sensitive instrumentation; it is also of profound significance for the understanding and verification of some of the most basic laws of nature. Superconductivity and superfluidity, for example, represent classes of phenomena in which the kinds of quantum behaviour that are normally confined to the domain of individual electrons or atoms instead appear on a macroscopic and experimentally readily accessible scale.
Review of "Progress in Low Temperature Physics, Volume XI" edited by D. F. Brewer (North-Holland, 1987.) Pp. xvi + 310 ISBN: 0444 87040 7.