In a thermometer,thermostat,clock or oven
You can refer to wikipedia.:)
A thermostat (especially the old non-digital kind) would be a good place to start searching.
A bimetallic strip is a strip with two metals bonded together. It can be found in thermostats
The bimetallic strip bends.
A bimetallic strip is made out of copper and steel.
A bimetallic strip is used to convert a temperature change into mechanical displacement.
Bimetallic strip
When the temperature of the iron increases, the bimetallic strip bends upwards. This breaks the contact between the strip and the heating coil. When the temperature falls, the bimetallic strip bends down and the contact is restored.
A bimetallic strip is typically made of two different metals fused together, such as brass and steel or copper and iron. These metals have different coefficients of thermal expansion, causing the strip to bend when exposed to temperature changes.
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A helical bimetallic strip is two strips of metal with differing boiling points that have been fused together, spiraling upwards around a central object. When heat is applied to the bimetallic strip, the different chemical properties in each metal strip will cause them to expand, forcing the helical strip to expand upwards.
A bimetallic strip can be found in thermostats and temperature gauges. It consists of two different metals bonded together with different thermal expansion rates, causing the strip to bend when exposed to temperature changes. This bending movement is often used to trigger mechanical switches or valves in response to temperature variations.