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A · B · C · D · E · F · G · H · I · J · K · L · M · N · O · P · Q · R · S · T · U · V · W · X · Y · Z   entire Web this site bimetal Two metals of different coefficients of expansion welded together so that the piece will bend in one direction when heated, and in the other when cooled; it can be used to open or close an electrical circuit, as in a thermostat. Related category    • CONTROL DEVICES Also on this site: Encyclopedia of Science Transport Concepts & Designs (partner site) BACK TO TOP