Search results

{{Short description|Equations of electromagnetism}} ...nt generalizations of the Biot–Savart and Coulomb laws'', American Journal of Physics '''59 (2)''' (1991), 111-117.</ref> ...

...urnal=The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science | publisher=Informa UK Limited | volume=15 | issue=100 | year=1933 ...ervations are transposed". This statement is fundamental in the derivation of the reciprocity theorem. ...

...also known as the differential force, residual force, or secondary effect of the gravitational field. ...or example, the Earth), but is also perturbed by the gravitational effects of a third body (for example, the Moon). The perturbing force is sometimes in ...

{{Short description|Overview of and topical guide to physics}} {{see also|Index of physics articles}} ...

...sed with "surface stress". Although surface stress and surface free energy of liquid–gas or liquid–liquid [[Interface (chemistry)|interface]] are the sam ==Thermodynamics of surface stress== ...

{{About|the principle of locality in physics|other uses of locality|Locality (disambiguation)}} ...e]]. Locality evolved out of the [[Classical field theory|field theories]] of [[classical physics]]. The idea is that for a cause at one point to have an ...

...en object on [[Earth]] and [[Mars]]. Weight varies due to different amount of [[gravitational acceleration]] whereas mass stays the same.]] In common usage, the [[mass]] of an object is often referred to as its [[weight]], though these are in fact ...

...ntly, if a particle travels in a closed loop, the total work done (the sum of the force acting along the path multiplied by the [[Displacement (geometry) ..., contributing to the [[mechanical energy]] and the overall [[conservation of energy]]. If the force is not conservative, then defining a scalar potentia ...

...are separated in space. [[Coulomb's law]] and [[Newton's law of universal gravitation]] are based on action at a distance. ...gnetism]], the [[strong interaction]] and the [[weak interaction]]) in all of physics are not described by action at a distance. ...

{{Short description|Fundamental physical law of electromagnetism}} ...duct of the magnitudes of charges and inversely proportional to the square of the distance between them. Like charges repel each other, and opposite char ...

...which is charged with the same polarity, is repelled by the electric field of her head and stands out from her head. ...field]], Electromagnetism is one of the four [[fundamental interaction]]s of nature. ...

{{Short description|Influence that can change motion of an object}} ...ortant, force is a [[Vector (geometric)|vector]] quantity. The [[SI unit]] of force is the [[newton (unit)|newton (N)]], and force is often represented b ...

{{Short description|Amount of matter present in an object}} ...}}</ref> The object's mass also determines the [[Force|strength]] of its [[gravitation]]al attraction to other bodies. ...

{{short description|Change of wavelength in photons during travel}} ...galaxies (right), as compared to absorption lines in the visible spectrum of the [[Sun]] (left). Arrows indicate redshift. Wavelength increases up towar ...

...tml |author=James Schombert |publisher=Department of Physics at University of Oregon |title=Anthropic principle |access-date=2012-04-26 |archive-date=201 ...Tipler]], which views the universe's structure as expressible by [[bit]]s of [[information]] in such a way that [[Information processing (psychology)|in ...

...romagnetism]] or the [[strong nuclear force|nuclear forces]]) with a range of anywhere from less than a millimeter to cosmological scales. Another propos ...o |year=2012 |title=Natural quintessence in string theory |journal=Journal of Cosmology and Astroparticle Physics |volume=2012 |issue=7 |page=044 |arxiv= ...

{{short description|Hypothesis proposing a modification of Newton's laws}} ...xplaining why galaxies do not appear to obey the currently understood laws of physics. ...

...seful in visualizing and understanding [[Special relativity|relativistic]] effects such as how different observers perceive ''where'' and ''when'' events occu ...ith the [[Lorentz transformation]] and [[Special relativity|special theory of relativity]]. ...

...al Institute of Standards and Technology | access-date=9 May 2012}}</ref>) of ...the velocity {{math|'''v'''}} of the charge (proportional to the magnitude of the field, the charge, and the velocity). ...

{{Short description|Force resulting from the quantisation of a field}} {{Quantum mechanics|cTopic=Effects}} ...