Physics

n. study of the laws of nature, study of the characteristics of matter and energy

v. provide medicine, administer drugs; act as a laxative, function as a diarrhetic

n. medicine, drug; cathartic, diarrhetic, laxative

This is a discussion of a present category of science. For the work by Aristotle, see “Physics (Aristotle)”. For a history of the science, see “History of physics”. 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 (φύσις).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.
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(n.)
The science of nature, or of natural objects; that branch of science which treats of the laws and properties of matter, and the forces acting upon it; especially, that department of natural science which treats of the causes (as gravitation, heat, light, magnetism, electricity, etc.) that modify the general properties of bodies; natural philosophy.
  

quantum dot impedance 

Mathematical equations and rules which predict the behaviour of the universe. They refer to quantities which can be observed and measured. The laws of physics are thought to have been shaped during the fleeting instants, known as the Planck time, following the big bang . It is a basic presupposition of science that the laws are invariant over all time and space.