Who was Lord Kelvin?

Lord Kelvin

Wílliam Thomson, Lord Kelvin (1824-1907) was a Scotish physicist. He is known both for his basic research in various forms of energy, such as mechanics, heat, light, and sound, and for his inventions. His father was a mathematics professor at Glasgow University who gave all his children a good education. Both William and his older brother taught at the university when they were grown. William was knighted for his work on the transatlantic Cable.
Among his contributions to theory, the Second Law of thermodynamics (dissipation of energy) is best known. He devised the Kelvin temperature scale. His studies also led to the development of modern refrigerators and freezers. He invented the mirror galvanometer and a type of compass that was not disturbed by iron in a ship.
He was an exciting teacher who kept his clasroom full of gadgets and demonstrated them during lectures. He often used his scientific friends as subjects for humorous demonstrations; but he was always willing to find
practical uses for friends' discoveries and to promote their inventions.