Editing Outline of physics (section)

=== Basic principles ===
Physics &ndash; branch of science that studies [[matter]]<ref name="feynmanleightonsands1963-atomic">At the start of ''[[The Feynman Lectures on Physics]]'', [[Richard Feynman]] offers the [[Atomic theory|atomic hypothesis]] as the single most prolific scientific concept: "If, in some cataclysm, all [] scientific knowledge were to be destroyed [save] one sentence&nbsp;[...] what statement would contain the most information in the fewest words? I believe it is&nbsp;[...] that ''all things are made up of atoms&nbsp;– 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''&nbsp;..." {{harv|Feynman|Leighton|Sands|1963|p=I-2}}</ref> and its [[Motion (physics)|motion]] through [[Spacetime|space and time]], along with related concepts such as [[energy]] and [[force]].<!--
   --><ref name="maxwell1878-physicalscience">"Physical science is that department of knowledge which relates to the order of nature, or, in other words, to the regular succession of events." {{harv|Maxwell|1878|p=9}}</ref> <!--
           -->  Physics is one of the "[[fundamental science]]s" because the other natural sciences (like biology, geology  etc.) deal with systems that seem to obey the laws of physics. According to physics, the physical laws of matter, energy and the fundamental forces of nature govern the interactions between particles and physical entities (such as planets, molecules, atoms or the subatomic particles). Some of the basic pursuits of physics, which include some of the most prominent developments in modern science in the last millennium, include:
* Describing the nature, measuring and quantifying of bodies and their motion, dynamics etc.
** [[Newton's laws of motion]]
** [[Mass]], [[force]] and [[weight]] ([[mass versus weight]])
** [[Momentum]] and [[conservation of energy]]
** [[Gravity]], theories of gravity
** [[Energy]], [[Work (physics)|work]], and [[Work (physics)#Work and energy|their relationship]]
** [[Motion (physics)|Motion]], [[Position (vector)|position]], and [[energy]]
** Different [[Forms of energy|forms of Energy]], their inter-conversion and the inevitable loss of energy in the form of heat ([[thermodynamics]])
** [[Conservation of energy|Energy conservation]], [[energy conversion|conversion]], and transfer.
** [[Energy source]] the transfer of energy from one source to work in another.
* [[Kinetic theory of gases|Kinetic molecular theory]]
** [[Phase (matter)|Phases of matter]] and [[phase transition]]s
** [[Temperature]] and [[thermometer]]s
** [[Energy]] and [[heat]]
** [[Heat transfer|Heat flow]]: [[Heat conduction|conduction]], [[convection]], and [[thermal radiation|radiation]]
** The four [[laws of thermodynamics]]
* The principles of [[wave]]s and [[sound]]
* The principles of [[electricity]], [[magnetism]], and [[electromagnetism]]
* The principles, sources, and properties of [[light]]
* Basic quantities
** [[Acceleration]]
** [[Electric charge]]
** [[Energy]]
** [[Entropy]]
** [[Force (physics)|Force]]
** [[Length]]
** [[Mass]]
** [[Matter]]
** [[Momentum]]
** [[Potential energy]]
** [[Space]]
** [[Temperature]]
** [[Time]]
** [[Velocity]]
[[Gravity]], [[light]], [[physical system]], [[physical observation]], [[physical quantity]], [[State of matter|physical state]], [[physical unit]], [[physical theory]], [[physical experiment]]

Theoretical concepts: [[mass–energy equivalence]], [[elementary particle]], [[physical law]], [[fundamental force]], [[physical constant]]