https://en.formulasearchengine.com/index.php?action=history&feed=atom&title=Normal_height 2026-05-30T14:18:59Z Revision history for this page on the wiki MediaWiki 1.43.0-wmf.28 https://en.formulasearchengine.com/index.php?title=Normal_height&diff=10919&oldid=prev 2013-02-28T17:59:34Z

<p><a href="/index.php?title=User:Addbot&amp;action=edit&amp;redlink=1" class="new" title="User:Addbot (page does not exist)">Bot:</a> Migrating 4 interwiki links, now provided by <a href="https://en.wikipedia.org/wiki/Wikidata" class="extiw" title="wikipedia:Wikidata">Wikidata</a> on <a href="/index.php?title=D:q2433871&amp;action=edit&amp;redlink=1" class="new" title="D:q2433871 (page does not exist)">d:q2433871</a> (<a href="/index.php?title=User_talk:Addbot&amp;action=edit&amp;redlink=1" class="new" title="User talk:Addbot (page does not exist)">Report Errors</a>)</p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 19:59, 28 February 2013</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">The name of the author </del>is <del style="font-weight: bold; text-decoration: none;">Figures </del>but <del style="font-weight: bold; text-decoration: none;">it's not </del>the <del style="font-weight: bold; text-decoration: none;">most masucline name out there</del>. <del style="font-weight: bold; text-decoration: none;">Doing ceramics </del>is <del style="font-weight: bold; text-decoration: none;">what adore performing</del>. <del style="font-weight: bold; text-decoration: none;">Since she was 18 she's been working as </del>a <del style="font-weight: bold; text-decoration: none;">receptionist but her marketing never comes</del>. <del style="font-weight: bold; text-decoration: none;">Years </del>in the <del style="font-weight: bold; text-decoration: none;">past we moved </del>to <del style="font-weight: bold; text-decoration: none;">North Dakota</del>.&lt;<del style="font-weight: bold; text-decoration: none;">br</del>&gt;&lt;<del style="font-weight: bold; text-decoration: none;">br</del>&gt;<del style="font-weight: bold; text-decoration: none;">Here is my website :: [http</del>://<del style="font-weight: bold; text-decoration: none;">www</del>.<del style="font-weight: bold; text-decoration: none;">escuelavirtual</del>.<del style="font-weight: bold; text-decoration: none;">registraduria</del>.<del style="font-weight: bold; text-decoration: none;">gov</del>.<del style="font-weight: bold; text-decoration: none;">co/user/view.php?id</del>=<del style="font-weight: bold; text-decoration: none;">140944&amp;course</del>=<del style="font-weight: bold; text-decoration: none;">1 http</del>:<del style="font-weight: bold; text-decoration: none;">//www.escuelavirtual.registraduria.gov.co/</del>]</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">{{Unreferenced stub|auto=yes|date=December 2009}}</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">'''Photon diffusion''' </ins>is <ins style="font-weight: bold; text-decoration: none;">a situation where [[photon]]s travel through a material without being absorbed, </ins>but <ins style="font-weight: bold; text-decoration: none;">rather undergoing repeated [[scattering]] events which change </ins>the <ins style="font-weight: bold; text-decoration: none;">direction of their path</ins>. <ins style="font-weight: bold; text-decoration: none;">The path of any given photon </ins>is <ins style="font-weight: bold; text-decoration: none;">then effectively a [[random walk]]. A large [[statistical ensemble|ensemble]] of such photons can be said to exhibit [[diffusion]] in the material, and can be described with a [[diffusion equation]]</ins>.</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">==Astrophysics==</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">In [[astrophysics]], photon diffusion occurs inside </ins>a <ins style="font-weight: bold; text-decoration: none;">[[stellar atmosphere]]</ins>. <ins style="font-weight: bold; text-decoration: none;">To describe this phenomenon, one should develop the transfer equation </ins>in <ins style="font-weight: bold; text-decoration: none;">moments and use </ins>the <ins style="font-weight: bold; text-decoration: none;">Eddington approximation </ins>to <ins style="font-weight: bold; text-decoration: none;">[[radiative transfer]] (i</ins>.<ins style="font-weight: bold; text-decoration: none;">e. the diffusion approximation). In 3D the results are two equations for the photon energy flux:</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">:</ins>&lt;<ins style="font-weight: bold; text-decoration: none;">math</ins>&gt;<ins style="font-weight: bold; text-decoration: none;">\vec F = -\frac{c}{12\pi\sigma}\vec \nabla U,</ins>&lt;<ins style="font-weight: bold; text-decoration: none;">/math</ins>&gt;</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>:<ins style="font-weight: bold; text-decoration: none;">&lt;math&gt;\vec \nabla \cdot \vec F = 0,&lt;</ins>/<ins style="font-weight: bold; text-decoration: none;">math&gt;</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">where &lt;math&gt;\sigma&lt;</ins>/<ins style="font-weight: bold; text-decoration: none;">math&gt; is the opacity</ins>. <ins style="font-weight: bold; text-decoration: none;">By substituting the first equation into the second, one obtains the diffusion equation for the photon energy density:</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">:&lt;math&gt;\nabla^2 U -\frac{1}{\sigma}\vec \nabla U \cdot \vec \nabla \sigma=0</ins>.<ins style="font-weight: bold; text-decoration: none;">&lt;/math&gt;</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">==Medical science==</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">In [[medicine]], the diffusion of photons can be used to create images of the body (mainly brain and breast) and has contributed much to the advance of certain fields of research, such as neuroscience</ins>. <ins style="font-weight: bold; text-decoration: none;">This technique is known as [[diffuse optical imaging]]</ins>.</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">==See also</ins>==</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">* [[Global dimming]]</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">* [[Radiative transfer equation and diffusion theory for photon transport in biological tissue]]</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">* [[Diffusion damping]]</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">* [[Diffuse reflection]]</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">{{DEFAULTSORT:Photon Diffusion}}</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[Category:Diffusion]]</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[Category</ins>:<ins style="font-weight: bold; text-decoration: none;">Photonics]</ins>]</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">{{Physics-stub}}</ins></div></td></tr> </table>

en>Addbot https://en.formulasearchengine.com/index.php?title=Normal_height&diff=243103&oldid=prev 2011-10-29T12:18:59Z

<p>lkfix normal gravity</p> <p><b>New page</b></p><div>The name of the author is Figures but it&#039;s not the most masucline name out there. Doing ceramics is what adore performing. Since she was 18 she&#039;s been working as a receptionist but her marketing never comes. Years in the past we moved to North Dakota.&lt;br&gt;&lt;br&gt;Here is my website :: [http://www.escuelavirtual.registraduria.gov.co/user/view.php?id=140944&amp;course=1 http://www.escuelavirtual.registraduria.gov.co/]</div>

en>Geof