Mechanical Equivalent of Heat

There is a simple relation between mechanical work done on a system and heat generated in it. James Prescott Joule first experimentally found that the heat produced in a system is directly proportional to the mechanical work done on it. He also calculated the constant of proportionality through a unique experiment, which we will also … Read more

Joule’s Law of Heating

When current flows through an electric circuit, the collision between the electrons and atoms of wire causes heat to be generated. How much heat is generated during current flowing through a wire and on what conditions and parameters do the heat generation depend? James Prescott Joule an English physicist, coined a formula which explains this … Read more