If a large collection of molecules is in random motion then the associated random kinetic energy is called the thermal energy. If a mechanical medium is disturbed by an oscillating source then pressure variations are set up in the medium and this propagates according to...
In a sound wave in steel, what is vibrating? Give an example of a source of vibration for a sound wave in steel.Transverse and Longitudinal WavesWaves that travel perpendicular to the direction of oscillations causing the wave are called transverse waves ...
of output shaft motion followed by a dwell period. The input shaft (1) drives through an auxiliary gear pair (3, 4) to a cam (18) and then to a second gear pair (6, 7) to a shaft (2) aligned with the input shaft. Both half shafts carry cranked projections (8, 9) with ...
of an alternate tensioning and release of a sliding tensioning system. This is programmed and controlled to make use of the different mechanical properties of different materials. A useful output is obtained from the forces restricting movement by the periodic reversal of the motion. In a preferred...