What is Conduction
The process of transfer of heat form one molecule to another is known as conduction. When a particular set of molecules gain energy, this energy is transferred from one to another. This transfer of heat is also happens in the form of convection and radiation. The substances which easily transfer the heat are known as the good conductors of heat. The substances which do not transfer the heat are known as bad conductors of heat.
Metals are given the highest consideration as good conductors of heat. The reason is because the transfer of heat in metal happens at a faster pace when compared to other materials. Stone is a partially good conductor whereas the materials such as paper, wood are bad conductors of heat.
The metal silver is taken as the consideration for the calculation of the heat conducted by other materials. Each metal has a rate of conduction at which the heat energy is transferred. In Silver the coefficient of conduction stands at 100. Hence silver is considered to the standard measure for calculating the conduction of metals. The conduction coefficient of the perfect vacuum is zero.
The rates of conduction which are seen in our everyday lives vary upon the substances used. If a frying pan which is hot is held with a cloth, the heat is not transferred to ones hands. The reason behind this is because the cloth is a insulator or a bad conductor of heat. This logic behind the transfer of heat is used by the manufacturers and thus a material which does not conduct heat is used in the frying pans.
The mechanism of the insulators in conducting is that they do not allow the electrons to move easily. This is different in good conductors where the electrons can easily move around the surface of the conductor. But, when a metal which is good conductor comes in touch with a bad conductor like wood, it loses its charge. This is the mechanism behind the working of conduction.
There are different types of conduction namely the fast ion conduction and thermal conduction. Thermal conduction refers to the transfer of heat form the region of high pressure to low pressure. It refers to transfer of heat form hot to cold. In the fast ion conduction, the ions which are completely charged move from one position to another. This concept is thus applied in our everyday lives in all the substances we use.
The process of conduction has thus made us clear regarding the safety concerns which could be taken to escape from the thermal and electric conduction. Conduction also has helped us to know conduction coefficient of various metals too.