Also in 1800, thermoelectric currents and anticipated the discovery of thermoelectricity by Thomas Johann Seebeck.
2.
The true importance of this " Peltier effect " in the explanation of thermoelectric currents was first clearly pointed out by James Prescott Joule; and Sir William Thomson further extended the subject by showing, both theoretically and experimentally, that there is something closely analogous to the Peltier effect when the heterogeneity is due, not to difference of quality of matter, but to difference of temperature in contiguous portions of the same material.
मोबाइल