bimetallic strip

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bimetallic strip

[¦bī·mə′tal·ik ‚strip]
(engineering)
A strip formed of two dissimilar metals welded together; different temperature coefficients of expansion of the metals cause the strip to bend or curl when the temperature changes.

bimetallic strip

bimetallic strip
A strip made up of two metals with different coefficients of thermal expansion. With changes in temperature, the strip curves because of uneven expansion of the two metals. Bimetallic strips are used in altimeters, temperature gauges, and other instruments.