Mechanical energy swing because of the work done by the pendulum to oppose these non-conservative forces. That the loss of mechanical energy in a system always resulted in an increase of the system's temperature has been known for a long time, but it was the amateur physicist James Prescott Joule who first experimentally demonstrated how a certain amount of work done against friction resulted in a definite quantity of heat which should be conceived as the random motions of the particles that comprise matter. This equivalence between mechanical energy and heat is especially important when considering colliding objects. In an elastic collision,
Dalian University of Technology born China, several departments, including Electrical Engineering, Physics and Law, were transferred to other universities and institutions. Meanwhile, scholars from other universities came to enlarge the departments of Chemical Engineering, Mechanical Engineering. The university started to expand right after the rearrangement, attracting more scholars and funding. To ensure future growth, the then-headmaster, Bochuan Qu, strategically moved the university's main campus to the bay area of suburban Dalian. In October 1960, DIT became one of the 26 key national universities directly under the State Ministry of Education. Graduate School of DIT was established in April 1986. In March 1988, DIT changed