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  • ...omagnetic property of [[classical vacuum]], relating mechanical and electromagnetic units of measurement. In the [[International System of Units]] (SI), its ...ite web |url=http://physics.nist.gov/cgi-bin/cuu/Value?mu0 |title=Magnetic constant |accessdate=2007-08-08 |work=2006 [[CODATA]] recommended values |publisher=
    4 KB (511 words) - 16:04, 17 April 2011
  • A [[physical constant]] in the [[International System of Units]] (SI) relating mechanical force a
    290 B (42 words) - 00:00, 28 March 2011
  • 12 B (1 word) - 05:08, 22 December 2007
  • {{r|Magnetism}} {{r|Free space (electromagnetism)}}
    297 B (37 words) - 05:13, 1 December 2010

Page text matches

  • {{r|Magnetism}} {{r|Magnetic constant}}
    219 B (26 words) - 15:22, 21 December 2010
  • {{r|Electromagnetism}} {{r|Magnetic constant}}
    708 B (98 words) - 20:33, 13 December 2010
  • ...omagnetic property of [[classical vacuum]], relating mechanical and electromagnetic units of measurement. In the [[International System of Units]] (SI), its ...ite web |url=http://physics.nist.gov/cgi-bin/cuu/Value?mu0 |title=Magnetic constant |accessdate=2007-08-08 |work=2006 [[CODATA]] recommended values |publisher=
    4 KB (511 words) - 16:04, 17 April 2011
  • {{r|Magnetization}} {{r|Magnetic constant}}
    1 KB (166 words) - 16:15, 24 December 2010
  • {{r|Gyromagnetic ratio}} {{r|Magnetic constant}}
    1 KB (165 words) - 18:34, 22 April 2011
  • #REDIRECT [[Magnetic constant]]
    31 B (3 words) - 12:44, 2 December 2008
  • #REDIRECT [[Magnetic constant]]
    31 B (3 words) - 19:06, 29 October 2007
  • #REDIRECT [[Magnetic constant]]
    31 B (3 words) - 19:04, 29 October 2007
  • *[[Magnetic field]] *[[Magnetization]]
    898 B (114 words) - 18:58, 13 December 2010
  • {{r|Electromagnetic wave}} {{r|Electromagnetism}}
    1 KB (148 words) - 21:47, 11 January 2010
  • Auto-populated based on [[Special:WhatLinksHere/Magnetic flux]]. Needs checking by a human. {{r|Electromagnetic induction}}
    808 B (104 words) - 23:16, 11 January 2010
  • {{r|Electromagnetic wave}} {{r|Electromagnetism}}
    830 B (107 words) - 23:10, 11 January 2010
  • *[[Magnetization]] *[[Magnetic induction]]
    1 KB (180 words) - 18:57, 13 December 2010
  • ...relative permeability describes the ease by which a magnetic medium may be magnetized. A related quantity is the '''magnetic susceptibility''', denoted by ''&chi;<sub>m</sub>'', related to the relat
    11 KB (1,675 words) - 22:41, 23 April 2011
  • {{r|Electric constant}} {{r|Magnetic constant}}
    280 B (35 words) - 05:54, 28 March 2011
  • ...r magnets Coulomb.png|right|250px|Coulomb force between North poles of bar magnets, '''F''' = &minus;<b>F'</b>. N is North pole; S is South pole.}} ...e, whereas electric charges do exist. However, with the aid of a long bar magnet the force between the poles can be measured reasonably accurately.
    3 KB (432 words) - 17:11, 11 June 2009
  • ...may be changed if required. For example, in the case of NMR logging, the magnet is inside, the probe surrounds it and a hollow cylindrical region surroundi ==Magnet==
    7 KB (1,077 words) - 16:05, 18 May 2009
  • ...etimes just the ''H''-field. In fact, some authors refer to '''B''' as the magnetic field and to '''H''' as an auxiliary field. ...permanent [[magnetism|magnet]]s (see [[Coulomb's law (magnetic)|Coulomb's magnetic law]]); more microscopically, the fundamental [[spin]]s of [[elementary p
    9 KB (1,330 words) - 21:37, 31 March 2011
  • ...avart]] describes the [[magnetic induction]] '''B''' (proportional to the magnetic field '''H''') caused by a direct electric current in a wire. Biot and Sa ...Savart announced that the magnetic force exerted by a long conductor on a magnetic pole falls off with the reciprocal of the distance and is orientated perp
    11 KB (1,702 words) - 18:31, 22 April 2011
  • {{r|Electric constant}} {{r|Magnetic constant}}
    1 KB (187 words) - 21:47, 27 March 2011
  • The term '''classical vacuum''' is used in classical [[electromagnetism]] where it refers to an ideal reference medium, devoid of all particles, {{cite book|title=Introduction to complex mediums for optics and electromagnetics |author=Werner S. Weiglhofer and Akhlesh Lakhtakia |year=2003 |url=http:
    10 KB (1,488 words) - 17:29, 16 November 2011
  • The constant of proportionality between the [[magnetic moment]] and [[Angular momentum (quantum)|angular momentum]] of an object
    129 B (17 words) - 18:48, 28 March 2011
  • ...gnetic field induces an electric current. This is the phenomenon of electromagnetic induction. ...he EMF induced in a circuit is proportional to the rate of decrease of the magnetic flux that cuts across the circuit. By [[Ohm's law]] an EMF induces an ele
    9 KB (1,549 words) - 17:18, 11 June 2009
  • ...cal commutation relations]], see the article [[quantization of the electromagnetic field]]. ...was the first to see that his equations predict the existence of [[electromagnetic wave]]s. Without knowledge and understanding of these waves we would not
    18 KB (2,680 words) - 23:46, 16 December 2010
  • ...rough the conducting wire. Two magnetic field lines are shown in blue. The magnetic induction '''B''' is a vector field tangent to field lines. The direction ...s made of [[iron]] or another [[ferromagnetic]] material that enhances the magnetic field.
    8 KB (1,392 words) - 12:40, 3 December 2009
  • The '''Rydberg constant''', often denoted as ''R<sub>&infin;</sub>'', originally defined empiricall ...|author=GW Series |chapter=Chapter 10: Hydrogen and the fundamental atomic constants}}
    4 KB (698 words) - 19:43, 5 August 2011
  • ...tician and physicist [[Carl Friedrich Gauss]], who was the first to define magnetic units. ...ussian units than in SI units. In addition, the various formulas of electromagnetism are easier to remember in Gaussian units than in SI units. Because they
    11 KB (1,498 words) - 09:46, 29 August 2009
  • ...uthor= C. Christodoulides |title=Comparison of the Ampère and Biot-Savart magnetostatic force laws in their line-current-element forms |journal= American Jo ==Electromagnetic units==
    14 KB (2,145 words) - 16:48, 21 April 2011
  • ...mic vacuum''', or ''QED vacuum'', refers to the ground state of the electromagnetic field, which is subject to fluctuations about a dormant zero average-fiel ...ΔE'' and ''Δt'' [[energy]] and [[time]] variations, and ℏ the [[Planck constant]] divided by 2π) arguing along the lines that the short lifetime of virtua
    19 KB (2,820 words) - 14:33, 18 February 2012
  • {{cite web |title=Neutron mass |work=Fundamental physical constants |url=http://physics.nist.gov/cgi-bin/cuu/Value?mn|search_for=neutron+mass {{cite web |title=Neutron g factor |work=Fundamental physical constants |url=http://physics.nist.gov/cgi-bin/cuu/Value?eqgnn|search_for=Neutron+g-
    9 KB (1,298 words) - 02:46, 22 July 2020
  • ...'',''t''). A stream of electromagnetic waves is referred to as '''[[electromagnetic radiation]]'''. ...the term ''electromagnetic'' (EM) is used, a contamination of electric and magnetic. Examples of EM waves in increasing [[wavelength]] are: [[gamma radiation
    25 KB (3,994 words) - 22:54, 17 April 2010
  • Auto-populated based on [[Special:WhatLinksHere/Electric constant]]. Needs checking by a human. {{r|Electromagnetic wave}}
    923 B (114 words) - 22:36, 17 April 2010
  • '''Nuclear magnetic resonance''' is a consequence of a property possessed by the nucleus know ...ts direction is also restricted to certain directions in the presence of a magnetic field.
    4 KB (645 words) - 19:04, 28 March 2011
  • {{r|Magnetization}} {{r|Magnetic moment}}
    873 B (113 words) - 14:04, 20 April 2011
  • ...hysics]], a '''magnetic field''' (commonly denoted by '''H''') describes a magnetic field (a vector) at every point in space; it is a [[vector field]]. In ...ental magnetic field, see the article about '''B''' for more details about magnetism.
    9 KB (1,428 words) - 13:19, 1 April 2011
  • ...name ''magnetic flux density'' (magnetic flux per unit of surface) for the magnetic induction '''B'''. If '''B''' is constant over ''S'', &Phi; is simply equal to '''B''' times the area of ''S''. If '
    1 KB (217 words) - 10:55, 11 July 2008
  • ...ic ratio''), ''&gamma;'', is the constant of proportionality between the [[magnetic moment]] ('''''&mu;''''') and the [[angular momentum]]('''''J''''') of an ...h is given (in radians/s) by the product of the field strength and the gyromagnetic ratio.<ref name = Larmor>
    12 KB (1,762 words) - 14:02, 25 October 2013
  • {{r|Free space (electromagnetism)}} {{r|Electric constant}}
    1 KB (196 words) - 10:55, 3 April 2011
  • ...ion). The gauss belongs to the [[Gaussian units|Gaussian]] and emu (electromagnetic) systems of units, which are cgs (centimeter-gram-second) systems. The u here Mx (maxwell) is the Gaussian unit for magnetic flux.
    2 KB (269 words) - 15:52, 10 May 2009
  • ...ct solutions of the [[Maxwell equations]] for the [[electric field]] and [[magnetic flux density]] generated at an arbitrary location by an ideal point charg ...on its trajectory. The symbol ''&epsilon;<sub>0</sub>'' is the [[electric constant]] of the [[SI units]]. Notice that at time <math>\tilde t</math>, unit vect
    5 KB (805 words) - 15:34, 28 April 2011
  • ...eau of Weights and Measures]].</ref> This sets the value of the [[magnetic constant]] μ<sub>0</sub> to 4π x 10<sup>&minus;7</sup> [[newton|N]]/A<sup>2</sup>. ...named for [[André-Marie Ampère]], an early investigator of electricity, magnetism, and chemistry.
    3 KB (445 words) - 00:14, 10 June 2010
  • ...ular in [[electrodynamics]], '''Ampère's law''' relates the strength of a magnetic field to the electric current that causes it. The law was first formulate ...nd ''c'' is the speed of light. The vector field '''B''' is known as the [[magnetic induction]]. The direction of integration along ''C'' matches ''i'' in th
    3 KB (510 words) - 15:16, 16 July 2008
  • ...nuclei in the presence of a magnetic field by using radio frequency electromagnetic radiation.<ref> I. I. Rabi.(1937) Phys. Rev., 51 652</ref><ref>N. Bloemb Pulses of radio-frequency electromagnetic radiation can be used to perturb the nuclear spin systems in a variety of
    39 KB (6,023 words) - 14:55, 8 September 2013
  • ...ivity''), designated ε<sub>0</sub>, is a [[physical constant]], an electromagnetic property of [[classical vacuum]], appearing in equations relating [[elect ...ealizable as some real "vacuum") and sometimes called [[Free space (electromagnetism)|free space]].
    4 KB (602 words) - 16:03, 17 April 2011
  • ...gnetometer''' is a scientific instrument used to measure the strength of [[magnetic field]]s. Earth's magnetism varies from place to place and differences in the Earth's [[magnetic field]] can be caused by a couple of things:
    9 KB (1,370 words) - 13:18, 12 September 2013
  • ...f the electromagnetic field''' is used in the [[quantization of the electromagnetic field| quantization]] that leads to [[photon]]s (light particles of well ...absence of charges and electric currents (that is, in [[Free space (electromagnetism)|"free" space]]), both '''E''' and '''B''' can be derived from a third
    15 KB (2,576 words) - 05:07, 1 December 2010
  • ...moment]] per unit volume, ''V'' of a material, defined in terms of the '''magnetic moments''' of its constituents by: ...] tending to align its moment with the field. Here, ''N'' is the number of magnetic moments in the volume ''V''. The M-field is measured in [[Ampere (unit)|a
    23 KB (3,481 words) - 19:29, 25 December 2010
  • {{r|Coulomb's law (magnetic)}} {{r|Electric constant}}
    1 KB (142 words) - 22:58, 17 April 2010
  • ...or MRS) is a [[spectroscopy|spectroscopic]] method that uses the [[nuclear magnetic resonance]] principle to manipulate the spin states of atomic nuclei to i ...[magnetogyric ratio]] of the [[isotope]] studied, and observing the electromagnetic signals emitted as the high energy states relax back to an equilibrium st
    41 KB (6,355 words) - 12:43, 12 April 2014
  • ...[[artificial satellites]]) allowing the observation of the whole [[electromagnetic spectrum]], modern astronomy has also discovered many exotic objects such ...ainly accomplished by detecting and analysing the various form of [[electromagnetic radiation]] (EM radiation) that reaches the observer, although methods of
    46 KB (6,796 words) - 01:44, 23 October 2020
  • ...on also serves to continuously mix the liquid reactant mixture, although a magnetic stirring rod mechanism is often used to achieve a uniform solution.
    6 KB (895 words) - 22:34, 21 November 2012
  • {{cite web |title=Proton mass |work=The NIST reference on constants, units and uncertainty |url=http://physics.nist.gov/cgi-bin/cuu/Value?mp|s {{cite web |title=Elementary charge |work=The NIST reference on constants, units and uncertainty |url=http://physics.nist.gov/cgi-bin/cuu/Value?e|se
    5 KB (829 words) - 02:52, 22 July 2020
  • ...cgi-bin/cuu/Value?e|search_for=electron+charge |work=The NIST reference on constants, units, and uncertainty |publisher=[[National Institute of Standards and T .../cgi-bin/cuu/Value?me|search_for=electron+mass |work=The NIST reference on constants, units, and uncertainty |accessdate=2011-09-04}}
    3 KB (445 words) - 01:16, 20 November 2020
  • {{r|Electromagnetism}} {{r|Electric constant}}
    781 B (105 words) - 14:49, 7 December 2008
  • Auto-populated based on [[Special:WhatLinksHere/Electromagnetic wave]]. Needs checking by a human. {{r|Electric constant}}
    1 KB (189 words) - 22:55, 17 April 2010
  • ...e two time-dependent fields together form an [[electromagnetic wave|electromagnetic field]]. ...r more electric charges other than ''q'', but it may also be caused by a magnetic field that varies in time, or by a combination of the two. The expression
    6 KB (913 words) - 16:51, 13 January 2010
  • {{r|Electric constant}} {{r|Electromagnetic wave}}
    1 KB (141 words) - 16:57, 28 July 2011
  • ...chemistry interacts with tissue and how it processes ideas. By applying [[magnetic resonance imaging]] with [[statistics|statistical analysis]], it's possib ...each of neuroimaging techniques. Computational morphometry on the basis of Magnetic Resonance (MR) images has become the method of choice for studying macros
    14 KB (2,133 words) - 08:30, 24 April 2010
  • {{r|Effects of inhomogeneous magnetic fields||**}} {{r|Nuclear Magnetic Resonance pulse sequences||*}}
    2 KB (230 words) - 12:42, 30 July 2009
  • ...W, described below, uses modern technology, but the basic phases have been constant since the introduction of the submarine. ...st basic, although a short-range method used primarily for localization, [[magnetic anomaly detection]] (MAD) can be useful.
    15 KB (2,276 words) - 11:16, 1 February 2011
  • ...ction '''B''' integrated over a surface ''S'', see [[Faraday's law (electromagnetism)|this article]]) gives an induced current that opposes the change in fl ...simple product. [[Faraday's law (electromagnetism)| Faraday's law]] of magnetic induction states that the electromotoric force (EMF) <math>\scriptstyle
    2 KB (388 words) - 17:33, 11 June 2009
  • '''Nuclear Magnetic Resonance experiments''' can have multiple variations added, such as form ...generally used for solution Nuclear Magnetic Resonance (NMR) spectroscopy, magnetic resonance imaging spectroscopy (MRI) and solid-state NMR spectroscopy.
    32 KB (5,116 words) - 00:36, 15 February 2010
  • ...determines the [[torque]], denoted here by '''τ''', it experiences in a [[magnetic flux density]] '''B''', namely '''τ'''&nbsp;=&nbsp;'''m&nbsp;×&nbsp;B'' A magnetic moment may have a macroscopic origin in a bar magnet or a current loop, for example, or microscopic origin in the spin of an ele
    20 KB (3,045 words) - 16:21, 29 June 2011
  • where &epsilon;<sub>0</sub> is the [[electric constant]] (permittivity of the vacuum) and ''N'' is the number density (number of a where we used that for most dielectric matter the relative [[magnetic permeability]] &mu;<sub>r</sub> is very close to unity. Substitution of
    7 KB (1,105 words) - 15:55, 11 June 2009
  • ...r any closed surface. Expressed in the form of an equation Gauss' law for magnetism reads: ...integral is over a closed surface that may envelop one or more permanent magnets and electric current carrying wires. The law is called after the German m
    3 KB (415 words) - 18:04, 29 March 2009
  • In the case at hand (constant ''R'') where <math>\hbar</math> is [[Planck's constant]] divided by <math>2\pi</math> and <math>\nabla^2</math> is the [[Laplacian
    25 KB (3,876 words) - 08:13, 1 October 2013
  • ...e''' is the force on an electrically charged particle that moves through a magnetic plus an electric field. The Lorentz force has two vector components, one proportional to the magnetic field and one proportional to the electric field. These components must
    5 KB (803 words) - 07:55, 14 February 2010
  • ...Results?search_for=atomic+unit |publisher=NIST |work=The NIST reference on constants, units, and uncertainty |accessdate=2011-09-04}} ...v/cgi-bin/cuu/Value?ttme|search_for=atomic+unit|work=The NIST reference on constants, units, and uncertainty |accessdate=2011-09-08}}
    13 KB (1,942 words) - 00:16, 9 September 2011
  • Auto-populated based on [[Special:WhatLinksHere/Planck's constant]]. Needs checking by a human. {{r|Electromagnetic radiation}}
    1 KB (157 words) - 00:35, 12 January 2010
  • ...iano that was somewhat simple to [[transport]], although it still required constant tuning.
    1 KB (221 words) - 13:39, 14 October 2009
  • ...n of the waves. Following Young and Fresnel, Maxwell assumed that electromagnetic waves are vibrations of the ether. ...bodies immersed in it. Descartes assumed that the ether particles are in constant motion, but, as there is no empty space for them to move to, he inferred th
    25 KB (4,057 words) - 14:08, 15 December 2010
  • ...is useful to group these processes into pairs, in which each variable held constant is one member of a [[conjugate variables (thermodynamics)|conjugate]] pair. #An isobaric process occurs at constant pressure.
    21 KB (3,073 words) - 01:08, 2 September 2020
  • ...the integral is zero. The constant &epsilon;<sub>0</sub> is the [[electric constant]]. ...magnetischen Vereins im Jahre 1839'' [Results from the observations of the magnetic Society in the year 1839], pp. 1-51. [http://books.google.com/books?id=1D
    6 KB (986 words) - 22:39, 17 April 2010
  • ...own work, were on the closely connected phenomena of [[electricity]] and [[magnetism]], but he also made very significant contributions in chemistry. ...evolved from his work is even more widespread. His discoveries in [[electromagnetism]] laid the groundwork for the engineering work in the late 1800s by peop
    40 KB (6,455 words) - 13:20, 1 September 2013
  • ...own work, were on the closely connected phenomena of [[electricity]] and [[magnetism]], but he also made very significant contributions in chemistry. ...evolved from his work is even more widespread. His discoveries in [[electromagnetism]] laid the groundwork for the engineering work in the late 1800s by peop
    41 KB (6,564 words) - 13:21, 1 September 2013
  • ...h energy is conserved, that is, the sum of kinetic and potential energy is constant in time. Indeed, ...by ''T'' is the increase of entropy of a system into which ''Q'' flows (at constant temperature ''T'').
    43 KB (7,032 words) - 00:15, 14 June 2010
  • ...l=http://physics.nist.gov/cuu/Units/index.html |work=The NIST reference on constants units and uncertainty |publisher=National Institute of Standards and Techn |The ampere is that constant current which, if maintained in two straight parallel conductors of infinit
    23 KB (3,580 words) - 16:31, 29 September 2011
  • ...[[index of refraction]], and [[magnetism |magnetic properties]], such as [[magnetic susceptibility]], may be obtained from calculation. ...ics) |spin]]. Usually these missing terms are collectively referred to as magnetic and relativistic effects.
    31 KB (4,757 words) - 07:20, 27 October 2013
  • ...res including emitted or reflected sounds, pressure waves, vibrations, and magnetic field or ionosphere disturbances.<ref name=FM2-0>{{citation ...reality of these sensors is that they must be fairly close to the target. Magnetic Anomaly Detection (MAD) is used, in [[anti-submarine warfare]], for final
    74 KB (10,988 words) - 21:31, 25 November 2013
  • ...system is at constant non-zero height above the surface the Earth, it has constant [[potential energy]] in the [[gravitation| gravitational field]] of the Ea ...ed by an alignment of the microscopic magnetic moments that constitute a magnetizable material.
    16 KB (2,618 words) - 11:23, 24 March 2010
  • where ℏ is [[Planck's constant]] divided by 2&pi;, the symbol '''&times;''' stands for a [[cross product] ...alue proportional to an integer usually denoted by ''m'' (the so-called [[magnetic quantum number]]).
    19 KB (2,981 words) - 15:51, 27 April 2010
  • ...en by directing small magnetic particles within a body along an external [[magnetic field]]. {{Image|Work with constant force.png|right|350px|Constant force '''F''' along path '''s''' <nowiki>=</nowiki> '''r'''<sub>1</sub> &mi
    17 KB (2,892 words) - 04:00, 27 May 2010
  • The real proportionality constant ''v''<sup>2</sup> had dimension (length)<sup>2</sup> over (time)<sup>2</sup ...ss density &rho; of the string (mass per unit length) remained finite and constant over the string. In this manner d'Alembert derived the equation
    17 KB (2,899 words) - 07:27, 24 March 2010
  • ...sh]] physicist best known for his formulation of [[electromagnetism|electromagnetic theory]] and the [[kinetic gas theory|statistical theory of gases]]. He ...xwell equations]], the [[Maxwell-Boltzmann distribution]], and the unit of magnetic flux, the [[Maxwell (unit)|maxwell]], were named after him, as was a [[cr
    35 KB (5,571 words) - 17:27, 6 September 2013
  • ...tish physicist best known for his formulation of [[electromagnetism|electromagnetic theory]] and the [[kinetic gas theory|statistical theory of gases]]. He ...xwell equations]], the [[Maxwell-Boltzmann distribution]], and the unit of magnetic flux, the [[Maxwell (unit)|maxwell]], were named after him, as was a [[cr
    35 KB (5,595 words) - 17:26, 6 September 2013
  • ..., and some of its volcanoes may still be active today. In contrast to the constant crustal movement seen on Earth, Venus is thought to undergo periodic episod ...d providing a likely explanation for its lack of an internally generated [[magnetic field]].<ref>Nimmo, F. (2002), ''Crustal analysis of Venus from Magellan
    41 KB (6,447 words) - 17:51, 9 January 2021
  • ...c constant]], and <math>\hbar</math> is [[Planck constant|Planck's reduced constant]]. ==Azimuthal and magnetic quantum numbers==
    5 KB (871 words) - 09:24, 20 September 2009
  • ...ric charges and currents are the sources of the [[Maxwell equations|electromagnetic field]] that determines the forces acting upon charges. In [[quantum elec ...of the [[electron]]. In the [[Standard Model]] of strong, weak, and electromagnetic interactions, a relativistic [[quantum field theory]] that describes inte
    21 KB (3,132 words) - 19:19, 30 August 2011
  • ...elding, and submerged arc welding. In these processes, arc length is kept constant, since any fluctuation in the distance between the wire and the base materi ...such as [[friction stir welding|friction stir]], [[magnetic pulse welding|magnetic pulse]], [[conductive heat seam welding|conductive heat seam]], and [[las
    41 KB (6,367 words) - 10:51, 12 September 2013
  • ...[[relative permittivity]] &epsilon;<sub>r</sub>, also known as dielectric constant) depending on the material that fills the space between the charges. All no ...nd the static [[relative permittivity]] (also known as relative dielectric constant) of the medium, respectively. The relative permittivity of air (&epsilon;<s
    12 KB (2,011 words) - 02:24, 26 August 2011
  • ...ization of the electromagnetic field''', the EM (electromagnetic) [[electromagnetic wave|field]] consists of discrete energy parcels, [[photon]]s. Photons ar ...field consists of parcels of energy ''h''&nu;, where ''h'' is [[Planck's constant]]. In 1927 [[Paul A. M. Dirac]] was able to weave the photon concept into t
    23 KB (3,635 words) - 17:14, 7 December 2009
  • ...s in a stable orbit around a nucleus -- seemingly defying classical electromagnetism. ...could not be explained by Newton's laws of motion and by classical electromagnetism.
    37 KB (5,578 words) - 08:00, 7 August 2011
  • ...hly dependent on its condition, typically including temperature. Water is constantly evaporating from bodies of water and entering the [[atmosphere]] to form ...e as 'polar', something roughly akin to the magnetic polar nature of a bar magnet. They also refer to the two covalent bonds in the molecule as [http://acade
    24 KB (3,756 words) - 06:56, 29 April 2021
  • ...a [[quantum mechanics|quantum mechanical]] theory for the explanation of magnetic properties and colors of [[transition element|transition metal complexes Because the crystal field is non-magnetic, the total electron spin ''S'' of the central ion is conserved. However,
    15 KB (2,390 words) - 15:11, 5 February 2010
  • ...rting cells, it is covered by protective layers and it is moistened by the constant circulation of a pristine fluid called "[[cerebrospinal fluid]]" (CSF). * [[Magnetic resonance imaging]] (MRI)
    50 KB (7,152 words) - 14:23, 6 January 2012
  • *magnetic field properties ...charged particles, so they don’t interact with matter through the electromagnetic force. They do not even interact through the strong force that holds toge
    18 KB (2,817 words) - 01:15, 28 October 2020
  • ...nd Paul Berth, in [[1931]]. Rickenbacker was the inventor of the horseshoe-magnet pickup. However, it was [[Danelectro]] that first produced electric guitars ...e [[#Truss Rod|Truss rod]]) is important to the guitar's ability to hold a constant pitch during tuning or when strings are fretted. The rigidity of the neck w
    38 KB (6,099 words) - 12:12, 18 October 2013
  • \mathbf{B} &&& \hbox{magnetic field} \\ ''The relation between the lines of magnetic force and the induction coefficients of a circuit, as already deduced fro
    4 KB (674 words) - 10:17, 23 February 2009
  • ...d about the strangeness of my existence. My thoughts swirl round and round constantly probing the strangeness of selfhood - why do I exist? Why am I me and not .... Depersonalization can begin episodically, and later become continuous at constant or varying intensity.
    22 KB (3,027 words) - 06:56, 10 February 2010
  • ...urther, they are important in the representation of the gravitational and magnetic fields of planetary bodies, the characterization of the cosmic microwave ...ular momentum operators|raising and lowering operators]]. The geodesy and magnetics communities never include the Condon-Shortley phase factor in their defi
    34 KB (5,282 words) - 19:21, 1 January 2011
  • ...in. The degree of pain ranges from a mild annoyance that comes and goes to constant and totally disabling. ...n D, Ho DW, Song YQ, Sham P et al.| title=Prevalence and pattern of lumbar magnetic resonance imaging changes in a population study of one thousand forty-thr
    47 KB (6,749 words) - 13:00, 30 July 2015
  • ...ects could not be explained at all by classical [[electromagnetism| electromagnetic]] theory or by the "old" quantum theory. Soon after the formulation of th ...e [[nucleus (atom)|nuclei]] while losing their energy by emitting [[electromagnetic radiation]]. This also means that classical theory cannot predict the siz
    56 KB (8,717 words) - 08:18, 1 November 2013
  • ...vestigation of the State of [[aether theories|Aether]] in [[magnetic field|Magnetic Fields]]''", was written contemporaneously. Albert remained behind in Mun ...ught [[James Clerk Maxwell|Maxwell's]] [[classical electromagnetism|electromagnetic theory]] and received his diploma in September 1896. During this time, he
    69 KB (10,573 words) - 06:33, 15 September 2013
  • ...lation, the energy density of the universe was dominated by a cosmological constant-type of vacuum energy. Later, the vacuum energy decayed to produce the matt ...the relative speed of an object is, the light emitted from it travels at a constant rate. A different mechanism is responsible for the spectral shift of light
    9 KB (1,494 words) - 10:47, 4 January 2010
  • ...nertial frame of reference|inertial frame]] (coordinate system moving with constant velocity with respect to the universe as a whole), irrespective of whether ...); independent of field strength (magnitude of the associated electric and magnetic fields); and independent of the frequency (color) of the light (no [[disp
    15 KB (2,338 words) - 03:52, 26 July 2020
  • If the fluid is incompressible, i.e., the mass density &rho; is constant, meaning that its time derivative is zero, the flux satisfies ...ue of one of [[Maxwell's equations]]. The vector field '''A''' is then the magnetic vector potential.
    3 KB (514 words) - 07:14, 14 October 2013
  • ...etism encompasses various real-world ''electromagnetic phenomena''. Electromagnetism, as taught in a typical undergraduate college physics curriculum, can be ...y of forces between moving charged objects, the magnetic field, and electromagnetic induction.
    13 KB (1,894 words) - 14:37, 15 December 2020
  • ...ian [[George Green]] (1793 &ndash; 1841), who investigated electricity and magnetism in a thoroughly mathematical fashion. In 1828 Green published a privatel where &epsilon;<sub>0</sub> is the [[electric constant]] and &rho; is a charge distribution,
    10 KB (1,681 words) - 17:22, 11 June 2009
  • ...l using only electrostatic forces, which required that the electrons be in constant motion, this led to further difficulties and he was never able to create a ...of each electron was constrained to be a positive integer times [[Planck's constant]] ''h'' divided by 2&pi;. Since in Bohr's model [[electron]]s can only make
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  • ...formula does not contain explicitly [[Planck's constant]], the [[electric constant]], the [[electron|electronic charge]], or the electronic mass. The only constants explicitly entering the formula are ''Z''<sub>A</sub> and ''M''<sub>A</sub
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  • ...ar Arrays|solar arrays]], as well as external experiments like the [[Alpha Magnetic Spectrometer]] and the [[Plasma Contactor Unit]] [http://space-power.grc. ...eneral experimentation). Several planned experiments, such as the [[Alpha Magnetic Spectrometer]], have been cancelled as well.
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  • ...SR personnel also may emplace unmanned MASINT sensors, such as seismic, magnetic, and other personnel and vehicle detectors, for subsequent remote activat ...s a personnel detection device that was often used in combination with the magnetic intrusiondetector (MAGID). Combining sensors in this way improved the abi
    53 KB (8,150 words) - 22:58, 8 February 2011
  • ...to assess additional benefits and harms of either digital mammography or magnetic resonance imaging instead of film mammography as screening modalities fo [[Magnetic resonance imaging]] (MRI) has been shown to detect cancers that are not v
    101 KB (14,656 words) - 16:27, 18 August 2015
  • ...shield the molecules from unwanted external fields, such as electrostatic, magnetic, and gravitational fields. (The latter field cannot be shielded, but weig ...when a thermodynamicist considers a system with constant temperature and a constant number of molecules he assumes that his system (a closed system, heat may
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  • ...egulation and oxygen consumption. The body's needs, however, do not remain constant. When an organism is under stress, the central nervous system works with th ...the US population 20 years of age and over. Allostatic load is remarkably constant in the older ages after increasing sharply in the years from 20 to 60. We h
    243 KB (35,084 words) - 20:34, 23 May 2010
  • Variable drive fans use [[hydraulic]] or [[magnetic]] couplings (between the fan wheel shaft and the motor shaft) that allow ...ffers better overall energy efficiency at reduced speeds than hydraulic or magnetic couplings.
    11 KB (1,719 words) - 19:20, 9 February 2010
  • ...for the mathematical models of many physical phenomena, including electro-magnetism and quantum mechanics. Even so, it is still often difficult to find exa ...ex numbers is that it is [[algebraically closed]]. This means that any non-constant [[polynomial]] with complex coefficients has a complex root. This result is
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  • Caption2 = Figure 1b: [[Magnetic resonance imaging|MRI]] image showing a mid-[[sagittal]] view of the huma ...he cerebellum integrates these pathways, like a train conductor, using the constant feedback on body position to fine-tune motor movements.<ref name="Fine">{{c
    42 KB (5,883 words) - 15:54, 11 June 2009
  • Case officers should constantly test their agents for changes in motivation or possible counterintelligen A '''dead drop''' is a container not easily found, such as a magnetized box attached to a metal rack in an out-of-sight alley. The box could be
    55 KB (8,423 words) - 11:55, 19 October 2013
  • ...ous challenges in the late 1940s: strikes, bitter political battles, and a constant struggle to set labor's place in society. These challenges prevented labor ...& Harry Bradley Technology and Trade School are just some examples of the magnet schools in Milwaukee. In addition to its public schools, Milwaukee is home
    72 KB (10,649 words) - 06:15, 15 September 2013
  • ...h light on what was otherwise obscure. It explains why mental and physical magnetic influence returned the functions of nerves to their normal amount of acti TWENTY YEARS HAS BEEN ONE CONSTANT BATTLE
    97 KB (15,789 words) - 09:37, 12 November 2013
  • Auto-populated based on [[Special:WhatLinksHere/Electromagnetic spectrum]]. Needs checking by a human. {{r|Catalog of magnetic nuclei}}
    2 KB (302 words) - 21:14, 11 January 2010
  • ...lementary particles, the photon is the messenger particle mediating electromagnetic forces, in particular, as a special case, the [[Coulomb's_law|Coulomb for Given an electromagnetic wave with [[wavelength]] &lambda;, its [[frequency]] &nu; is inversely p
    4 KB (577 words) - 18:02, 19 September 2011
  • ...amics]]. The first law states that the amount of energy in the universe is constant, that is, if the energy content of a [[physical system]] seems to increase, In 2006, an Irish company called [[Steorn]] claimed to have invented a magnetic 'free energy' machine dubbed the 'Orbo' - these claims were propagated on
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  • ...between mysticism and psychology, including [[Michael Persinger]]'s use of magnetic inducement of temporal lobe activity to prompt mystical or transcendent e ...an]] (theophany - manifestation of a particular God/Goddess) if he/she did constant japa (chanting a mantra). The personal devotion (Bhakti) to a deity in thi
    7 KB (1,059 words) - 20:15, 22 August 2018
  • ...ng, and interpreting, images by means of [[electromagnetic spectrum|electromagnetic]] or [[sound waves|acoustic energy]] transmitted through the body. Anothe ...le, is done with an X-ray or other image of the operative site kept in the constant view of the surgeon, who does not need a radiologist at his side to explain
    9 KB (1,234 words) - 10:32, 31 May 2009
  • ...]]) in which all bodies that are far from other bodies, move straight with constant speed or rest immobile. Traditionally, raectionless propulsion was consider ...08a/1076-zd.pdf Second physics, 2009.]</ref> The device shown looks like a magnetic tape-recorder of the past century. The parameters of the device are given
    10 KB (1,424 words) - 17:41, 8 June 2011
  • ...path than the outer wheel. If the rolling surface of the wheels was of a constant diameter one of the two wheels would have to wastefully and inefficiently s ...tems have powered cars, or complex car-track interaction systems such as [[magnetic levitation]].
    9 KB (1,367 words) - 22:51, 16 December 2014
  • ...and [[laser]] acupuncture treatments. They are studied using [[functional magnetic resonance imaging]] and [[positron emission tomography]] of the brain,<re ...more violently to pain from changes in the pressure (rubbing) rather than constant pressure. All pressure points can cause pain.
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  • ...kinetic energy of the constituent atoms. But in more complicated systems, magnetic, electronic, photonic, or other exotic degrees of freedom can play a sign ...a physics]], because of the high temperatures encountered and the [[electromagnetic]] nature of the phenomena involved, it is customary to express temperatur
    23 KB (3,654 words) - 13:17, 10 October 2013
  • ...mal Magnetism: Aphid-Ranching Ants" [http://www.fourmilab.ch/images/animal_magnetism/fourmis_pucerons.html]</ref> ...t—the former for feeding, the latter for mating. Larvae indeed typically constantly eat and do not move much, while adults move great distances. Research is
    28 KB (4,279 words) - 11:29, 7 May 2014
  • ...e collection discipline]] based on interception of signals, usually electromagnetic, between people (i.e., COMINT or communications intelligence) or between ...}</ref> A U.S. targeting system under development in the late 1990s, PSTS, constantly sends out information that helps the interceptors properly aim their ante
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  • ...ian wars on the plains and heavy winter snowstorms east of the city were a constant threat to the connections with Kansas and points eastward. In 1863 the tele ...rtime housing shortage led to a postwar construction boom, as Denver was a magnet for many of the servicemen who had been stationed nearby in the war. The po
    31 KB (4,724 words) - 17:29, 13 December 2009
  • Gravitational forces, strong nuclear forces, or even magnetic forces, do not play any significant role in chemical bonding. ...g on the coordinates of electron 1 and 2, respectively); ℏ is [[Planck's constant]] and ''m''<sub>e</sub> is the mass of an [[electron]]. The quantity ''E''<
    37 KB (5,832 words) - 14:26, 11 October 2013
  • ...al, bumptious, shallow-minded and reactionary, but with a certain personal magnetism, great pluck and some originality, not of intellect but of character. Mo ...n indefatigable advocate and actor of Anglo-American cooperation, with the constant argument that this policy was in the best interest of Britain. His mother w
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  • ...that something that you can’t learn in school. Call it charisma, call it magnetism, he had it.”<ref>Ibid., p. 43.</ref> ...n was typecast as an uncouth, boorish slob with no discipline, so you were constantly impressed to discover he was just the opposite.”<ref>Belushi, ''Samurai
    43 KB (7,023 words) - 08:55, 3 October 2013
  • ...had determined that radioactive decay in any given material proceeds at a constant rate. Those elements are present in geologic samples and their radioactivit ...arity units" or "magnetozones".<ref>[http://www.stratigraphy.org/magn.htm Magnetostratigraphic polarity units]International Stratigraphic Guide</ref>
    42 KB (5,498 words) - 23:08, 10 October 2013
  • ...of forced separations by separate sales. Most slaves had to live under the constant threat, and sometimes the reality, of being separated from their loved ones ...ingly inland as well, has become more popular as a tourist destination and magnet for new arrivals. Even some descendants of black Carolinians who moved out
    52 KB (7,914 words) - 08:40, 6 February 2010
  • ...ce to Greyfriars' Kirk. By tradition, passers-by rub the nose, giving it a constant shine. ...es Clerk Maxwell]] (1831-1879) whose contributions to the study of electro-magnetism prepared the way for quantum physics, and is regarded as one of the worl
    56 KB (9,056 words) - 17:32, 2 October 2020
  • ...a less adroit politician than Roosevelt and lacked the energy and personal magnetism, not to mention the publicity devices, the dedicated supporters, and the ...on of President McKinley, Roosevelt became the first president to be under constant [[Secret Service]] protection.
    65 KB (10,181 words) - 06:56, 15 September 2013
  • ...– Only released in Japan, this add-on system's games are on re-writeable magnetic disks. Games released include a paint and 3D construction package, [[F-Ze ...as [[Animal Forest]], a franchise that has developed a cult following and constantly growing install base with each installment. It has appeared on the [[Nint
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