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[[Physics:Physics|Physics]] (Greek: physis–φύσις meaning "nature") is the [[Natural science|natural science]] which examines basic concepts such as [[Physics:Mass|mass]], [[Physics:Charge|charge]], [[Physics:Matter|matter]]<ref name = "feynman">R. P. Feynman, R. B. Leighton, [[Biography:Matthew Sands|M. Sands]] (1963), ''[[Physics:The Feynman Lectures on Physics|The Feynman Lectures on Physics]]'', {{ISBN|0-201-02116-1}} Hard-cover. p.1-1 Feynman begins with the [[Physics:Atomic theory|atomic hypothesis]], as his most compact statement of all scientific knowledge: "If, in some cataclysm, all of scientific knowledge were to be destroyed, and only one sentence passed on to the next generations ..., what statement would contain the most information in the fewest words? I believe it is ... that ''all things are made up of atoms–little particles that move around in perpetual motion, attracting each other when they are a little distance apart, but repelling upon being squeezed into one another. ...''" vol. '''I''' p. I–2</ref> and its [[Physics:Motion|motion]] and all that derives from these, such as [[Physics:Energy|energy]], [[Physics:Force|force]] and [[Physics:Spacetime|spacetime]].<ref>[[Biography:James Clerk Maxwell|James Clerk Maxwell]] (1878), [https://books.google.com/books?id=noRgWP0_UZ8C&q=matter+and+motion ''Matter and Motion'']. New York: D. Van Nostrand. p.1: "Nature of Physical Science–Physical science is that department of knowledge which relates to the order of nature." | accessdate=2008-11-04</ref> More broadly, it is the general analysis of [[Earth:Nature|nature]], conducted in order to understand how the [[Philosophy:World|world]] and [[Astronomy:Universe|universe]] behave.<ref>H.D. Young & R.A. Freedman, ''University Physics with Modern Physics'': 11th Edition: International Edition (2004), Addison Wesley. Chapter 1, section 1.1, page 2 has this to say: "Physics is an ''experimental'' science. Physicists observe the phenomena of nature and try to find patterns and principles that relate these phenomena. These patterns are called physical theories or, when they are very well established and of broad use, physical laws or principles." <br> Steve Holzner, ''Physics for Dummies'' (2006), Wiley. Chapter 1, page 7 says: "Physics is the study of your world and the world and universe around you." See [https://www.amazon.com/gp/reader/0764554336 Amazon Online Reader: Physics For Dummies (For Dummies(Math & Science))], retrieved 24 Nov 2006</ref>

The index of physics articles is split into multiple pages due to its size.

To navigate by individual letter use the table of contents below.

{{TOC index|Index of physics articles}}

== See also ==
* List of basic physics topics

== References ==
{{reflist}}

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