What is physics?
Physics is the most fundamental of the sciences. In a broad sense, physics is the study of the natural laws that govern how things behave. More specifically, it concerns itself with space, time and matter (defined as any “stuff” that exists in space and time). One aspect of physics is to formulate general laws that govern the behavior of matter, its interactions, and its motion in space and time. Another aspect is to use these laws to make predictions of the way specific things move and interact—for example, the prediction of eclipses from the laws of gravity or how airplanes are able to fly from the laws of aerodynamics.
Physics is a vast subject, and in a book of this nature we cannot do more than scratch the surface. Fortunately, ...
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