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Physics is the science of the properties and interaction of energy, space, matter and time.  While pure physics focuses on developing theories or models of reality, applied physics as may be found in engineering or technology seeks to make use of science to meet human needs.


College physics courses are usually organized along the following or similar headings: classical mechanics, electromagnetism, thermodynamics, quantum mechanics, fluid mechanics, wave motion, harmonic motion, optics, nuclear physics, and relativity.

Laws of the Universe

Diverse phenomena of the physical universe can be described with a small number of laws.  Scientific laws are not explanations as some would have us think.  Their value lies in being reliable and carefully formulated descriptions of phenomena.  For example, Newton’s Laws of Motion describe how mass, force, space, and time interact and enables predictions and applications of these interactions.

They do not explain why something accelerates when it experiences a force, nor does it even define conceptually what a force is.  The “why” of the universe is embodied in theories or models that incorporate laws in a logically consistent framework.  For example, the heliocentric model of the solar system is consistent with celestial observations as described in Kepler’s Laws of planetary motion.

Teach Yourself Physics?

Would you go to a surgeon who was self-taught?  Interacting with people who have already succeeded in doing what you are trying to do is more sensible.  They know the route and can show you the way.  Achievement can not be guaranteed since it depends on individual abilities and effort, but seeing knowledge and skills applied to situations or problems may help accelerate your growth by eliminating the time needed to “rediscover the wheel.”  Why pay for an entire physics course in addition to your college tuition if all you need is help with specific topics or certain skills?

Great Resources

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