#OPENSTAX PHYSICS PROFESSIONAL#
These analytical skills will help you to excel academically, and they will also help you to think critically in any professional career you choose to pursue. More importantly, you will gain analytical abilities that will enable you to apply these laws far beyond the scope of what can be included in a single book. In learning to apply these laws, you will, of course, study the most important topics in physics. The unifying aspect of physical laws and the basic simplicity of nature form the underlying themes of this text. Apparently unrelated topics are connected through broadly applicable physical laws, permitting an understanding beyond just the memorization of lists of facts. Understanding this law makes it easier to learn about the various forms energy takes and how they relate to one another. The law of conservation of energy (which says that energy can change form but is never lost) ties together such topics as food calories, batteries, heat, light, and watch springs.
For example, what do a bag of chips and a car battery have in common? Both contain energy that can be converted to other forms. It is the underlying order of nature that makes science in general, and physics in particular, so enjoyable to study. We have found that nature is remarkably cooperative-it exhibits the underlying order and simplicity we so value. As humans, we make generalizations and seek order. In the face of all these details, we have discovered that a surprisingly small and unified set of physical laws can explain what we observe. From the flight of birds to the colors of flowers, from lightning to gravity, from quarks to clusters of galaxies, from the flow of time to the mystery of the creation of the universe, we have asked questions and assembled huge arrays of facts. Over the centuries, the curiosity of the human race has led us collectively to explore and catalog a tremendous wealth of information. Every day, each of us observes a great variety of objects and phenomena.
The physical universe is enormously complex in its detail. Figure 1.2 The flight formations of migratory birds such as Canada geese are governed by the laws of physics.
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