Why does the thermo emf in Seebeck effect reverse if the temperature of hot junction is increased more than temperature of inversion. What happens insdie the metals in the atomic level?
2006-12-02 02:13:11 · 2 answers · asked by mohan k 1 in Science & Mathematics ➔ Physics
The Seebeck coefficient is a function of temperature. For bismuth telluride, it peaks around 54 degrees C. The Seebeck effect is a relatively weak effect. The tendency of the charge carriers to drift in one direction becomes small compared to the other factors affecting their motion as temperature increases. I don't think it reverses, I think it just becomes negligible.
2006-12-02 06:09:56 · answer #1 · answered by Frank N 7 · 0⤊ 1⤋
this is more along the lines of electronics then physics i think ;p. i don't remember exactly.. or at all actually ^^... but when anything get hot the molecules are flying all over the place in it. i dunno for sure, but i'd guess that when you put a current though a conductor when its at different temperatures something abnormal would hapen cuz of the atoms moving around so much. *shrugs* just go eat some pizza :3
2006-12-02 10:45:29 · answer #2 · answered by i like pizza 1 · 0⤊ 2⤋