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.
Â· A physicist is a scientist who does research in physics. Physicists study a wide range of physical phenomena in many branches of physics spanning all length scales: from s â¦ ub-atomic particles of which all ordinary matter is made (particle physics) to the behavior of the material Universe as a whole (cosmology).hey might ask what causes gravity, for example, or what the shape and size of the universe is. Then, they use observation and mathematics to find the answers. Many physicists do experiments. Some, for example, ram atoms into each other in an accelerator to break them apart.