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Wikipedia gives you a good definition and a very large list of areas.

There's also the "Simple English" wikipedia.

They give a very short and good definition for Physics.

See http://simple.wikipedia.org/wiki/Physics

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15y ago

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Physics math or science?

I am knowledgeable in a variety of areas, including physics, mathematics, and science. How can I assist you today?


What is the classification of physics?

If I have to divide physics into branches, I'll first divide it into classical and modern physics. Classical physics usually refers to physics before 19th century, they're Newtonian mechanics and Maxwell's electromagnetism. Modern physics refers to physics invented in the 19th century and beyond with two major areas that have been accepted closely by the community: quantum mechanics and theory of relativity. There are many other areas beyond the realm of quantum mechanics and relativity such as string theory (an attempt to combine the two) or cosmology. But there are also areas that do not fall into these categories, such as biophysics or physics of nonlinear systems. It's hard to classify the different theories that physics has.


Any important question on physics?

Will the Universe continue expanding forever or will it collapse?


How do you define mass used in the context of physics?

Mass, in the context of physics, is a measure of the amount of matter in an object. It is a scalar quantity that determines an object's resistance to acceleration when a force is applied. The standard unit for mass is the kilogram.


What is considered the offspring of physics?

Physics offspring can be considered as other branches of science such as astrophysics, geophysics, or biophysics that emerge by applying the principles and concepts of physics to specific areas of study. Additionally, technological advancements stemming from physics research can also be seen as its offspring.