Development of the vacuum assisted closure technique. The practice of exposing a wound to sub-atmospheric pressure for an extended period to promote debridement and healing was first described by Fleischmann et al in 1993 [1], following the successful use of this technique in 15 patients with open fractures.
Physics is the scientific study of matter and energy and how they interact with each other. This energy can take the form of motion, light, electricity, radiation, gravity â just about anything, honestly.
According to About.com, physics is the study of matter, energy and the way they interact. Physics is a natural science that also encompasses concepts like force and motion. The primary goal of physics is to understand how the universe behaves.