Date: 29 April 2017
The Thermoelectric effect is a fascinating discovery, where temperature differences are directly converted into electric voltage. Thus a device which is capable of the thermoelectric effect will generate electric voltage if there is a temperature difference between the both sides of the device. Consistently, application of electric current on the the device will cause a temperature difference between both sides of the device.
Applications: Refrigerators, temperature measurement, thermoelectric generators (heat engines).
Read more on Wikipedia:
Thermoelectric effect