What does a bimetal strip primarily respond to?

A bimetal strip primarily responds to temperature changes due to its construction, which consists of two different metals bonded together. Each metal expands at a different rate when heated. This differential expansion causes the strip to bend or curve when subjected to temperature variations.

In practical applications, this property is utilized in temperature measuring devices and thermostats, where the bending action can be used to trigger switches or indicate temperature levels. The accuracy and responsiveness of bimetal strips to changes in temperature make them effective for automatic temperature control systems, safety devices, and other similar applications.