bimetallic strip
/bʌɪməˌtalɪk ˈstrɪp
/noun
A temperature-sensitive electrical contact used in some thermostats, consisting of two bands of different metals joined lengthwise. When heated, the metals expand at different rates, causing the strip to bend.Where no great accuracy is needed, a bimetallic strip thermometer is often used....
- As a room warms up or cools down, the bimetallic strip in the thermostat bends one way or the other.
- Use the heat gun to heat the bimetallic strip of the thermometer and note the effect on the pointer.
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