Mechanical energy nonconservative forces, like frictional forces, will be present, but often they are of negligible values and the mechanical energy's being constant can therefore be a useful approximation. In elastic collisions, the mechanical energy is conserved but in inelastic collisions, some mechanical energy is converted into heat. The equivalence between lost mechanical energy (dissipation) and an increase in temperature was discovered by James Prescott Joule. Many devices are used to convert mechanical energy to or from other forms of energy, e.g. an electric motor converts electrical energy to mechanical energy, an electric generator converts mechanical energy into electrical energy and a
Court of Owls Court of Owls The Court of Owls is an organized crime group and secret society appearing in American comic books published by DC Comics, commonly in association with the superhero Batman. They have secretly existed since colonial times in Gotham City. The Court kidnaps child performers from the circus, only to train and transform them into their assassins, known as Talons. As part of the 2015-2016 "Robin War" storyline, the Court of Owls had expanded internationally and is referred to as the Parliament of Owls. The Court of Owls were created by writer Scott Snyder and artist Greg Capullo and