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Compound Bar (Compound Strip)
To demonstrate unequal expansion in different metals on heating. Highlights the role of temperature and materials in practical applications such as in the thermostats.
Consists of a laminated strip of two different metals fitted in a wooden handle. The strip is about (lxw), 200x8mm. Due to differences in the co-efficient of linear expansion of both metals, the laminated strip bends dramatically on heating.