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
Wuhan University of Technology Automotive Polytechnic University. What was more, in 1999, Hubei No.1 Mechanical Industry School and Hubei Energy Economy School were merged into the university. Later in May 2000, it merged with the other two universities mentioned in the beginning and thus formed Wuhan University of Technology. Currently, the university owns 23 academic schools, 9 state key disciplines, 74 Doctoral programs, 135 Master's programs as well as 82 Bachelor's programs. WUT has about 5,570 staff members, including 650 professors, 3 academicians of China Academy of Engineering and 3 academicians of China Academy of Science. Besides, over 36,000 undergraduates, 16000 postgraduates (including Master