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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