Slow motion is a technique in film-making whereby time appears to be slowe down. It was invented by Austrian August Musger. Typically this is achieved when each film frame is captured at a rate much faster than it will be played back. When replayed at normal speed, time appears to be moving slower. The technical term for slow motion is overcranking, referring to the concept of cranking a handcranked camera faster than normal (i.e. faster than 24 frames per second). High-speed photography is a more sophisticated technique that uses specialized equipment to record fast phenomena, usually for scientific applications.