Tue April 05, 2011 By: Aditya Bansal

How do you calculate Thomas coefficient and Seebeck coefficient?

Expert Reply
Wed April 06, 2011

Dear student

If the temperature difference ΔT between the two ends of a material is small, then the thermopower of a material is conventionally (though only approximately, see below) defined as:

where ΔV is the thermoelectric voltage seen at the terminals. (See below for more on the signs of ΔV and ΔT.)

This can also be written in relation to the electric field E and the temperature gradient , by the equation:

Hope this helps.
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