Bimetallic strip and thermostat in 3D

Change the room temperature and the thermostat setting, or let it run.

Learn thermal expansion properly

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Questions students ask

Why does a bimetallic strip bend when heated?

The two metals expand by different amounts; the one that expands more ends up on the outside of the curve.

Where are bimetallic strips used?

Thermostats in irons, ovens and water heaters, fire alarms and dial thermometers.

Free notes on thermal expansion

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