Conversion of thermal energy into electrical energy

Principle

This experiment shows that a thermogenerator can produce electric energy from thermal energy. The  thermal tension of a thermogenerator depends on the temperature difference across the element.

Task

Is it possible to generate electric energy with the help of only one finger?

To examine this question a thermocouple is used in this experiment. The thermocouple is made up of a so-called "Peltierelement"which is assembled between two thin plates made of aluminium. Observe what happens when the upper aluminium plate, is warmed up by a finger.

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