Physics & Astronomy

Thermoelectric Converter

Purpose
To demonstrate that thermoelectric effects can be used to power a small electric motor.
Location
room 136, P4; hot plate on shelf I5; beaker tong on I4
Description
This device operates when the legs are placed in reservoirs with a temperature difference between them (Seebeck Effect). The simplest way to do this demo is to use cold (below 25 �C) tap water and hot (at least 60 �C) water (as shown). It may take a few minutes for the aluminum legs to reach a large enough temperature difference, and the fan will need a push to get it started.
(The older unit requires liquid nitrogen and warm water in Styrofoam� cups.)