Code: 4200.80
Simple demonstrator for thermal expansion
The apparatus consists of a bimetal strip that expands differently on both sides due to two different materials. Once heated, it will bend to one side as one of the metals will expand faster than the other.
Specifications
Size: 10x10x12 cm
Weight: 0.2 kg
Mounted on base, with electrical plugs for electric contacts
Equipment Suggested
Current & Voltage Sensor (code 4840.16)
LAWS AND PRINCIPLES INVESTIGATED
EXAMPLE OF USE: Thermal expansion
Demonstration of a Bimetal Strip in action.
Many of today’s thermostats are based on the differential expansion of two different metals. Differential expansion causes the metals to change shape when heated. This metal bending can then be used to turn off a switch. With our Bimetal Strip it is possible to demonstrate this behaviour by just connecting a multimeter to the electric contacts. Before it is heated, you will see that the Bimetal Strip will make a closed circuit. When it starts to heat up, the circuit will open as the Bimetal Strip will visibly bend way. Once cooled, it will revert back to its original position, closing the circuit once more
