a pair of dissimilar conductors joined at two points to form a closed circuit so as to produce a thermoelectric current when the junctions are at different temperatures: used in temperature measurements
"thermocouple." YourDictionary, n.d. Web. 17 October 2018. <http://www.yourdictionary.com/thermocouple>.
thermocouple. (n.d.). Retrieved October 17th, 2018, from http://www.yourdictionary.com/thermocouple
A thermoelectric device used to measure temperatures accurately, especially one consisting of two dissimilar metals joined so that a potential difference generated between the points of contact is a measure of the temperature difference between the points.
We conclude by applying Ohm's law that the electromotive force, E, of the thermocouple may be approximately represented for small differences of temperature by the formula E=CR=p(t-t').
Of a copperiron thermocouple reaches a maximum when the temperature of.
This law is commonly applied in connecting a thermocouple to a galvanometer with coils of copper wire, the junctions of the copper wires with the other metals being placed side by side in a vessel of water or otherwise kept at the same temperature.
- In order to justify the assumption involved in the application of the second law of thermodynamics to the theory of the thermocouple in the manner above specified, it would be necessary and sufficient, as Thomson pointed out (Phil.
The method appears to be open to the objection that the difference of temperature reached in so long an interval would be more or less independent of the thermal 0 0 .20 h ?1 capacities of the calorimeters, and would also be difficult to measure accurately with a thermocouple under the conditions described.