bimetallic strip A device used in thermostats and mechanical thermometers. It consists of bonded strips of two metals with dissimilar coefficients of thermal expansion. When heated, the bimetallic strip bends because one metal expands more than the other. This reversible distortion is used to move a dial pointer or to open or close a switch in an electric circuit. Related category TECHNOLOGY Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) |