Matches in DBpedia 2016-04 for { <http://wikidata.dbpedia.org/resource/Q1747478> ?p ?o }
Showing triples 1 to 91 of
91
with 100 triples per page.
- Q1747478 subject Q6394452.
- Q1747478 subject Q8411330.
- Q1747478 abstract "This page is about reciprocity theorems in classical electromagnetism. See also Reciprocity theorem (disambiguation) for unrelated reciprocity theorems, and Reciprocity (disambiguation) for more general usages of the term.In classical electromagnetism, reciprocity refers to a variety of related theorems involving the interchange of time-harmonic electric current densities (sources) and the resulting electromagnetic fields in Maxwell's equations for time-invariant linear media under certain constraints. Reciprocity is closely related to the concept of Hermitian operators from linear algebra, applied to electromagnetism.Perhaps the most common and general such theorem is Lorentz reciprocity (and its various special cases such as Rayleigh-Carson reciprocity), named after work by Hendrik Lorentz in 1896 following analogous results regarding sound by Lord Rayleigh and Helmholtz (Potton, 2004). Loosely, it states that the relationship between an oscillating current and the resulting electric field is unchanged if one interchanges the points where the current is placed and where the field is measured. For the specific case of an electrical network, it is sometimes phrased as the statement that voltages and currents at different points in the network can be interchanged. More technically, it follows that the mutual impedance of a first circuit due to a second is the same as the mutual impedance of the second circuit due to the first.Reciprocity is useful in optics, which (apart from quantum effects) can be expressed in terms of classical electromagnetism, but also in terms of radiometry.There is also an analogous theorem in electrostatics, known as Green's reciprocity, relating the interchange of electric potential and electric charge density.Forms of the reciprocity theorems are used in many electromagnetic applications, such as analyzing electrical networks and antenna systems. For example, reciprocity implies that antennas work equally well as transmitters or receivers, and specifically that an antenna's radiation and receiving patterns are identical. Reciprocity is also a basic lemma that is used to prove other theorems about electromagnetic systems, such as the symmetry of the impedance matrix and scattering matrix, symmetries of Green's functions for use in boundary-element and transfer-matrix computational methods, as well as orthogonality properties of harmonic modes in waveguide systems (as an alternative to proving those properties directly from the symmetries of the eigen-operators).".
- Q1747478 wikiPageExternalLink lorentz_vkaw_4_176_96.pdf.
- Q1747478 wikiPageExternalLink 2up.
- Q1747478 wikiPageExternalLink 2up.
- Q1747478 wikiPageWikiLink Q108193.
- Q1747478 wikiPageWikiLink Q1111.
- Q1747478 wikiPageWikiLink Q11233438.
- Q1747478 wikiPageWikiLink Q1136376.
- Q1747478 wikiPageWikiLink Q11382.
- Q1747478 wikiPageWikiLink Q11408.
- Q1747478 wikiPageWikiLink Q11461.
- Q1747478 wikiPageWikiLink Q11651.
- Q1747478 wikiPageWikiLink Q122518.
- Q1747478 wikiPageWikiLink Q124164.
- Q1747478 wikiPageWikiLink Q131214.
- Q1747478 wikiPageWikiLink Q132629.
- Q1747478 wikiPageWikiLink Q13424600.
- Q1747478 wikiPageWikiLink Q1350049.
- Q1747478 wikiPageWikiLink Q1411145.
- Q1747478 wikiPageWikiLink Q142270.
- Q1747478 wikiPageWikiLink Q14620.
- Q1747478 wikiPageWikiLink Q1531701.
- Q1747478 wikiPageWikiLink Q1544810.
- Q1747478 wikiPageWikiLink Q155907.
- Q1747478 wikiPageWikiLink Q162869.
- Q1747478 wikiPageWikiLink Q1637085.
- Q1747478 wikiPageWikiLink Q175010.
- Q1747478 wikiPageWikiLink Q177625.
- Q1747478 wikiPageWikiLink Q178192.
- Q1747478 wikiPageWikiLink Q179043.
- Q1747478 wikiPageWikiLink Q181175.
- Q1747478 wikiPageWikiLink Q186247.
- Q1747478 wikiPageWikiLink Q190524.
- Q1747478 wikiPageWikiLink Q1934296.
- Q1747478 wikiPageWikiLink Q1935004.
- Q1747478 wikiPageWikiLink Q193760.
- Q1747478 wikiPageWikiLink Q210857.
- Q1747478 wikiPageWikiLink Q211569.
- Q1747478 wikiPageWikiLink Q212986.
- Q1747478 wikiPageWikiLink Q214159.
- Q1747478 wikiPageWikiLink Q215067.
- Q1747478 wikiPageWikiLink Q215589.
- Q1747478 wikiPageWikiLink Q2165620.
- Q1747478 wikiPageWikiLink Q223683.
- Q1747478 wikiPageWikiLink Q234072.
- Q1747478 wikiPageWikiLink Q247760.
- Q1747478 wikiPageWikiLink Q25428.
- Q1747478 wikiPageWikiLink Q26336.
- Q1747478 wikiPageWikiLink Q273328.
- Q1747478 wikiPageWikiLink Q2744368.
- Q1747478 wikiPageWikiLink Q28352.
- Q1747478 wikiPageWikiLink Q3123791.
- Q1747478 wikiPageWikiLink Q338886.
- Q1747478 wikiPageWikiLink Q339011.
- Q1747478 wikiPageWikiLink Q3396184.
- Q1747478 wikiPageWikiLink Q378435.
- Q1747478 wikiPageWikiLink Q381040.
- Q1747478 wikiPageWikiLink Q41591.
- Q1747478 wikiPageWikiLink Q41688.
- Q1747478 wikiPageWikiLink Q46221.
- Q1747478 wikiPageWikiLink Q4902347.
- Q1747478 wikiPageWikiLink Q504186.
- Q1747478 wikiPageWikiLink Q51501.
- Q1747478 wikiPageWikiLink Q55451.
- Q1747478 wikiPageWikiLink Q5659246.
- Q1747478 wikiPageWikiLink Q571921.
- Q1747478 wikiPageWikiLink Q60024.
- Q1747478 wikiPageWikiLink Q60052.
- Q1747478 wikiPageWikiLink Q6158.
- Q1747478 wikiPageWikiLink Q6394452.
- Q1747478 wikiPageWikiLink Q6500908.
- Q1747478 wikiPageWikiLink Q652941.
- Q1747478 wikiPageWikiLink Q7302493.
- Q1747478 wikiPageWikiLink Q744771.
- Q1747478 wikiPageWikiLink Q7534780.
- Q1747478 wikiPageWikiLink Q756033.
- Q1747478 wikiPageWikiLink Q7575001.
- Q1747478 wikiPageWikiLink Q82571.
- Q1747478 wikiPageWikiLink Q827674.
- Q1747478 wikiPageWikiLink Q827688.
- Q1747478 wikiPageWikiLink Q83297.
- Q1747478 wikiPageWikiLink Q834020.
- Q1747478 wikiPageWikiLink Q8411330.
- Q1747478 wikiPageWikiLink Q856980.
- Q1747478 wikiPageWikiLink Q900488.
- Q1747478 wikiPageWikiLink Q9021.
- Q1747478 wikiPageWikiLink Q911035.
- Q1747478 comment "This page is about reciprocity theorems in classical electromagnetism.".
- Q1747478 label "Reciprocity (electromagnetism)".