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- {{Nuclear physics}} ...mmarizes [[equation]]s in the theory of [[nuclear physics]] and [[particle physics]].<!--very skimpy for now, will add much more soon--> ...12 KB (1,744 words) - 18:33, 13 December 2023
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- This article summarizes [[equation]]s in the theory of [[fluid mechanics]]. ...the component of flux passing through the surface, multiplied by the area of the surface (see [[dot product]]). For this reason flux represents physical ...8 KB (1,213 words) - 18:30, 13 December 2023
- ...w than a simple average as a simple average would violate the [[second Law of Thermodynamics]]. ==Equations for a perfect gas== ...3 KB (451 words) - 16:42, 11 October 2023
- In [[physics]] a '''conserved current''' is a current, <math>j^\mu</math>, that satisfie where <math display="inline">Q = \int_V j^0 dV</math> is the [[charge (physics)|conserved quantity]]. ...5 KB (689 words) - 19:41, 3 January 2023
- ...at can be used to describe devices that do not produce significant amounts of electromagnetic waves. For instance the capacitor and the coil in [[electri ...s to a situation where all time derivatives can be neglected. However some equations can be considered as quasistatic while others are not, leading to a system ...5 KB (665 words) - 19:42, 11 September 2021
- {{Short description|Equations of electromagnetism}} ...generalizations of the Biot–Savart and Coulomb laws'', American Journal of Physics '''59 (2)''' (1991), 111-117.</ref> ...11 KB (1,656 words) - 18:59, 8 December 2023
- ...ref>Halliday, David, Resnick, Robert, and Walker, Jearl. [[Fundamentals of Physics]]. John Wiley & Sons, 2013.</ref> The massic gravitational potential energy (MGPE) of an object is defined as the [[gravitational potential]] at a location which ...3 KB (395 words) - 09:02, 14 November 2023
- {{for|the board game|Lines of Action}} ...que lever arm w point of application and line of action.svg|thumb|The line of action is shown as the vertical dotted line. It extends in both directions ...3 KB (406 words) - 11:08, 25 February 2024
- ...ian gravitation and the GEM weak gravitational field and slow-motion limit of general relativity--> ...to one position, centre of gravity is a real physical quantity, the point of a body where the gravitational force acts. They are equal if and only if th ...13 KB (1,839 words) - 18:32, 13 December 2023
- {{Short description|Branch of physics about magnetism in systems with steady electric currents}} ...tatics is widely used in applications of [[micromagnetics]] such as models of [[magnetic storage]] devices as in [[computer memory]]. ...8 KB (1,204 words) - 22:11, 14 January 2024
- ...iption|Hypothesis that physics experiments will behave the same regardless of when they are conducted}} ...s Limited|isbn=978-1-84614-702-9|chapter=3}}</ref> In mathematics, the set of all time translations on a given system form a [[Lie group]]. ...10 KB (1,396 words) - 12:38, 11 November 2023
- {{Nuclear physics}} ...mmarizes [[equation]]s in the theory of [[nuclear physics]] and [[particle physics]].<!--very skimpy for now, will add much more soon--> ...12 KB (1,744 words) - 18:33, 13 December 2023
- ...oduce [[direct current]]. The theory of PHG is explained using [[Maxwell's equations]]. This term unifies all devices that work in line with this definition. PH ...h a [[superconductor]] [[Electromagnetic shielding|shield]] or shield made of so far unknown material (low-voltage [[semiconductor]] with high [[Current ...4 KB (561 words) - 15:15, 10 January 2024
- {{short description|4D analogue of electric current density}} ...a. Also known as '''vector current''', it is used in the geometric context of ''four-dimensional [[spacetime]]'', rather than separating time from [[thre ...6 KB (849 words) - 16:44, 2 December 2023
- {{Short description|Equation in physics}} ...[[electromagnetic wave equation]]s. The equations follow from [[Maxwell's equations]]. ...14 KB (1,954 words) - 21:25, 13 April 2023
- {{Short description|Type of observable in a physical system}} ...ope to the [[Invariant (mathematics)|mathematical definition]]. Invariants of a system are deeply tied to the symmetries imposed by its environment. ...4 KB (590 words) - 03:10, 4 July 2023
- ...'}}), as opposed to normal [[electric current|current]] (flow of [[charge (physics)|charge]]). It was originally postulated by [[Oliver Heaviside]]. It is als ...t, although this would not be a convenient way of visualising the fullness of the storage tanks. ...4 KB (666 words) - 14:58, 28 July 2017
- {{Short description|Propagation delay of EM radiation (light)}} ...term "retarded" is used in this context (and the literature) in the sense of [[propagation delay]]s. ...4 KB (703 words) - 16:28, 21 January 2024
- ...combustion engines: Engine power is the [[Product (mathematics)|product]] of the engine [[torque]] and the crankshaft's [[angular velocity]]. Power is the [[Product (mathematics)|product]] of [[torque]] and [[angular velocity]]:<ref name="Böge_233">{{Harvnb|Böge|2017 ...6 KB (826 words) - 21:06, 19 January 2024
- ...ons | journal=IEEE Antennas and Propagation Magazine | publisher=Institute of Electrical and Electronics Engineers (IEEE) | volume=41 | issue=3 | year=19 ...he integral operator describing how Y is given from X based on the physics of the problem. ...5 KB (613 words) - 18:26, 19 December 2023
- {{short description|Branch of theoretical physics}} ...therefore, a [[classical field theory]]. The theory provides a description of electromagnetic phenomena whenever the relevant [[length scale]]s and field ...12 KB (1,845 words) - 21:14, 4 January 2024
