The Wiedemann-Franz Law states that good conductors of electricity are also good conductors of heat. Vanadium dioxide not only switches from an insulator to a conductor at 67C (152F), but it appea ...

Materials that conduct electricity well, like metals, also tend to conduct heat. For instance, a metal spoon left in a hot ...

This is because good electrical conductors are usually good heat conductors too. However, researchers at Drexel University and Université catholique de Louvain (UCLouvain) in Belgium have ...

So, conduction in metals is faster than in non-metals. Metals are good conductors of heat energy because they contain free electrons. Cooking pans are made of metal. Energy is transferred to the ...