Any body with at least one measurable property that changes as temperature changes can be used as a thermometer. Such a feature is called a thermometric property. The particular substance that exhibits variations in the thermometric property is known as a thermometric …

Many hygroscopic (moisture-absorbing) materials can be used as relative-humidity sensors. Such materials absorb or lose moisture until a balance is reached with the surrounding air. A change in material moisture content causes a dimensional change, and this change can …