A bimetallic strip is used in thermometers. It can also be used in different applications, such as coils found in thermostats and electrical breaker boxes.
A bimetallic strip is comprised of two different metals. For it to be a bimetallic strip, the two metals must have different expansion coefficients. Brass and steel are common metals that are bonded together in a bimetallic strip.
When a bimetallic strip with brass and steel is heated, the brass will expand more the steel, causing the strip to curve with the brass on the outside. When the steel is cooled, it will curve with the steel on the outside. This works well in thermometers to help demonstrate the mercury rising as temperatures go up.Learn More
The bimetallic strip on an iron serves as a thermostatic switch to stop electricity from flowing to the heating element once the appliance reaches the desired temperature. The differences in the coefficients of expansion for the two metals that form the strip cause it to curve as it heats, eventually to the point it pulls away from the electrical contact and breaks the circuit.Full Answer >
A bimetallic strip thermometer is a mechanical thermometer that is commonly used for its temperature control. This type of thermometer is robust, simple and has a wide temperature range. It contains two strips that are bonded together and made of dissimilar metals.Full Answer >
Fermi level is used to describe the top of the collection of electron levels at absolute zero temperature. This concept is derived from Fermi-Dirac statistics.Full Answer >
The calorimetry equation is used to find the enthalpy change for a reaction at a constant pressure. It is the product of the mass, the specific heat capacity of the substance and the change in temperature. This type of calorimetry is also known as coffee cup calorimetry.Full Answer >