The Franz-Wiedemann law is similar to Ohm＇s law in that it applies to an important but narrow set of materials.ln 1853 R. Franz and G. Wiedemann observed that in metals the ratio of the thermal conductivity to the el...The Franz-Wiedemann law is similar to Ohm＇s law in that it applies to an important but narrow set of materials.ln 1853 R. Franz and G. Wiedemann observed that in metals the ratio of the thermal conductivity to the electrical conductivity is a constant.This observation suggests that whatever mechanism or particle is involved in the transmission of electrical current through a metal may also be responsible for the transmission of heat.ln this paper we present an inexpensive and quick experiment through which this law may be verified for copper, aluminum and zinc.展开更多
文摘The Franz-Wiedemann law is similar to Ohm＇s law in that it applies to an important but narrow set of materials.ln 1853 R. Franz and G. Wiedemann observed that in metals the ratio of the thermal conductivity to the electrical conductivity is a constant.This observation suggests that whatever mechanism or particle is involved in the transmission of electrical current through a metal may also be responsible for the transmission of heat.ln this paper we present an inexpensive and quick experiment through which this law may be verified for copper, aluminum and zinc.
