https://en.formulasearchengine.com/index.php?action=history&feed=atom&title=Weak_ordering
Weak ordering - Revision history
2026-04-18T05:15:00Z
Revision history for this page on the wiki
MediaWiki 1.43.0-wmf.28
https://en.formulasearchengine.com/index.php?title=Weak_ordering&diff=294947&oldid=prev
en>Gadget850: fix subscription required in citation, replaced: format=subscription required → subscription=yes using AWB
2014-12-29T13:22:19Z
<p>fix subscription required in citation, replaced: format=subscription required → subscription=yes using <a href="/index.php?title=Testwiki:AWB&action=edit&redlink=1" class="new" title="Testwiki:AWB (page does not exist)">AWB</a></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 15:22, 29 December 2014</td>
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<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;">{{Unreferenced|date=December 2009}}</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;">32 yr old Sales Adviser (Medical and Pharmaceutical Products ) Chester from Ridgetown</ins>, <ins style="font-weight: bold; text-decoration: none;">likes to spend time reading</ins>, <ins style="font-weight: bold; text-decoration: none;">herpes symptoms and rock music</ins>. <ins style="font-weight: bold; text-decoration: none;">Has completed a great round </ins>the <ins style="font-weight: bold; text-decoration: none;">world voyage that included visting </ins>the <ins style="font-weight: bold; text-decoration: none;">Itchan Kala</ins>.<<ins style="font-weight: bold; text-decoration: none;">br</ins>><<ins style="font-weight: bold; text-decoration: none;">br</ins>><ins style="font-weight: bold; text-decoration: none;">My site </ins>[<ins style="font-weight: bold; text-decoration: none;">http</ins>://<ins style="font-weight: bold; text-decoration: none;">toughsynergy3147.over-blog.com</ins>/<ins style="font-weight: bold; text-decoration: none;">2015</ins>/<ins style="font-weight: bold; text-decoration: none;">02</ins>/<ins style="font-weight: bold; text-decoration: none;">it-</ins>is<ins style="font-weight: bold; text-decoration: none;">-crucial-to-recognize-</ins>the<ins style="font-weight: bold; text-decoration: none;">-symptoms-</ins>of-<ins style="font-weight: bold; text-decoration: none;">genital-hsv-virus</ins>.<ins style="font-weight: bold; text-decoration: none;">html herpes symptoms mouth cure</ins>]</div></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;">[[Image:Planck current.png|frame|right|1 - conductors</del>, <del style="font-weight: bold; text-decoration: none;">F<sub>P</sub> - Planck force</del>, <del style="font-weight: bold; text-decoration: none;">l<sub>P</sub> - Planck length, I<sub>P</sub> - Planck current</del>.<del style="font-weight: bold; text-decoration: none;">]]</del></div></td><td colspan="2" class="diff-side-added"></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 '''Planck current''' is </del>the <del style="font-weight: bold; text-decoration: none;">unit of [[electric current]], denoted by I<sub>P</sub>, in </del>the <del style="font-weight: bold; text-decoration: none;">system of [[natural units]] known as [[Planck units]]</del>.</div></td><td colspan="2" class="diff-side-added"></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> </div></td><td colspan="2" class="diff-side-added"></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;">:</del><<del style="font-weight: bold; text-decoration: none;">math</del>> <del style="font-weight: bold; text-decoration: none;">I_\text{P} = q_\text{P}/t_\text{P} = (c^6 4 \pi \varepsilon_0 / G )^ \frac{1}{2} </del><<del style="font-weight: bold; text-decoration: none;">/math</del>> <del style="font-weight: bold; text-decoration: none;">≈ 3.479 × 10<sup>25</sup> [</del>[<del style="font-weight: bold; text-decoration: none;">ampere|A]]</del></div></td><td colspan="2" class="diff-side-added"></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> </div></td><td colspan="2" class="diff-side-added"></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;">where:</del></div></td><td colspan="2" class="diff-side-added"></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> </div></td><td colspan="2" class="diff-side-added"></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;"><math>q_\text{P} = (c \hbar 4 \pi \varepsilon_0 )^ \frac{1}{2} <</del>/<del style="font-weight: bold; text-decoration: none;">math> is the [[Planck charge]]</del></div></td><td colspan="2" class="diff-side-added"></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;">:<math>t_\text{P} = (\hbar G</del>/<del style="font-weight: bold; text-decoration: none;">c^5)^ \frac{1}{2} <</del>/<del style="font-weight: bold; text-decoration: none;">math> is the [[Planck time]]</del></div></td><td colspan="2" class="diff-side-added"></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;">:<math>\varepsilon_0<</del>/<del style="font-weight: bold; text-decoration: none;">math> = [[permittivity]] in vacuum</del></div></td><td colspan="2" class="diff-side-added"></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;">:<math>\hbar<</del>/<del style="font-weight: bold; text-decoration: none;">math> </del>is the <del style="font-weight: bold; text-decoration: none;">[[reduced Planck constant]]</del></div></td><td colspan="2" class="diff-side-added"></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;">:''G'' is the [[gravitational constant]]</del></div></td><td colspan="2" class="diff-side-added"></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;">:''c'' is the [[speed </del>of <del style="font-weight: bold; text-decoration: none;">light]] in vacuum.</del></div></td><td colspan="2" class="diff-side-added"></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> </div></td><td colspan="2" class="diff-side-added"></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 Planck current is that current which, in a [[conductor (material)|conductor]], carries a Planck charge in Planck time.</del></div></td><td colspan="2" class="diff-side-added"></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> </div></td><td colspan="2" class="diff-side-added"></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;">Alternatively, the Planck current is that constant current which, if maintained in two straight parallel conductors of [[infinity|infinite]] length and negligible circular cross</del>-<del style="font-weight: bold; text-decoration: none;">section, and placed a Planck length apart in [[vacuum]], would produce between these conductors a [[force]] equal to a Planck force per Planck length</del>.</div></td><td colspan="2" class="diff-side-added"></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> </div></td><td colspan="2" class="diff-side-added"></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;">== Notes and references==</del></div></td><td colspan="2" class="diff-side-added"></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;">{{Reflist|2}}</del></div></td><td colspan="2" class="diff-side-added"></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> </div></td><td colspan="2" class="diff-side-added"></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> </div></td><td colspan="2" class="diff-side-added"></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;">{{Planck's natural units}}</del></div></td><td colspan="2" class="diff-side-added"></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;">{{Portal bar|Physics}}</del></div></td><td colspan="2" class="diff-side-added"></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> </div></td><td colspan="2" class="diff-side-added"></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;">{{DEFAULTSORT:Planck Current}}</del></div></td><td colspan="2" class="diff-side-added"></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;">[[Category:Natural units|Current, planck]]</del></div></td><td colspan="2" class="diff-side-added"></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;">[[Category:Units of electric current</del>]<del style="font-weight: bold; text-decoration: none;">]</del></div></td><td colspan="2" class="diff-side-added"></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> </div></td><td colspan="2" class="diff-side-added"></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> </div></td><td colspan="2" class="diff-side-added"></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;">{{Physics-stub}}</del></div></td><td colspan="2" class="diff-side-added"></td></tr>
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en>Gadget850
https://en.formulasearchengine.com/index.php?title=Weak_ordering&diff=6670&oldid=prev
en>David Eppstein: /* Total preorders */ aka preference relation
2014-01-07T02:25:29Z
<p><span class="autocomment">Total preorders: </span> aka preference relation</p>
<p><b>New page</b></p><div>{{Unreferenced|date=December 2009}}<br />
[[Image:Planck current.png|frame|right|1 - conductors, F<sub>P</sub> - Planck force, l<sub>P</sub> - Planck length, I<sub>P</sub> - Planck current.]]<br />
The '''Planck current''' is the unit of [[electric current]], denoted by I<sub>P</sub>, in the system of [[natural units]] known as [[Planck units]].<br />
<br />
:<math> I_\text{P} = q_\text{P}/t_\text{P} = (c^6 4 \pi \varepsilon_0 / G )^ \frac{1}{2} </math> ≈ 3.479 × 10<sup>25</sup> [[ampere|A]]<br />
<br />
where:<br />
<br />
:<math>q_\text{P} = (c \hbar 4 \pi \varepsilon_0 )^ \frac{1}{2} </math> is the [[Planck charge]]<br />
:<math>t_\text{P} = (\hbar G/c^5)^ \frac{1}{2} </math> is the [[Planck time]]<br />
:<math>\varepsilon_0</math> = [[permittivity]] in vacuum<br />
:<math>\hbar</math> is the [[reduced Planck constant]]<br />
:''G'' is the [[gravitational constant]]<br />
:''c'' is the [[speed of light]] in vacuum.<br />
<br />
The Planck current is that current which, in a [[conductor (material)|conductor]], carries a Planck charge in Planck time.<br />
<br />
Alternatively, the Planck current is that constant current which, if maintained in two straight parallel conductors of [[infinity|infinite]] length and negligible circular cross-section, and placed a Planck length apart in [[vacuum]], would produce between these conductors a [[force]] equal to a Planck force per Planck length.<br />
<br />
== Notes and references==<br />
{{Reflist|2}}<br />
<br />
<br />
{{Planck's natural units}}<br />
{{Portal bar|Physics}}<br />
<br />
{{DEFAULTSORT:Planck Current}}<br />
[[Category:Natural units|Current, planck]]<br />
[[Category:Units of electric current]]<br />
<br />
<br />
{{Physics-stub}}</div>
en>David Eppstein