hai, Physics is the science of matter and its motion, as well as space and time —the science that deals with concepts such as force, energy, mass, and charge. As an experimental science, its goal is to understand the natural world. For the etymology of the word physics, see physis . In one form or another, physics is one of the oldest academic disciplines; through its modern subfield of astronomy, it may be the oldest of all. Sometimes synonymous with philosophy, chemistry and even certain branches of mathematics and biology during the last two millennia, physics emerged as a modern science in the 17th century and these disciplines are now generally distinct, although the boundaries remain difficult to define.