When defining a material's conductivity, we usually consider its conductivity of heat and conductivity of electricity separately. However, I realize that materials like metal conduct both heat and electricity well. In contrast, materials like wood and glass conduct both heat and electricity poorly. Therefore can we conclude that if a material is bad at conducting one kind of "flow of energy", then it will also be bad at conducting another kind of "flow of energy"? Thanks a lot.
[Physics] Are materials which are bad at conducting heat always bad at conducting electricity also
electricityenergyinsulatorsthermodynamics
Best Answer
Diamond is a good thermal conductor but a poor electrical conductor.
Diamond at Wikipedia