https://www.explainxkcd.com/wiki/index.php?action=history&feed=atom&title=1851%3A_Magnetohydrodynamics 2026-04-14T23:38:30Z Revision history for this page on the wiki MediaWiki 1.30.0 https://www.explainxkcd.com/wiki/index.php?title=1851:_Magnetohydrodynamics&diff=380598&oldid=prev 2025-06-29T15:20:59Z

<p>‎<span dir="auto"><span class="autocomment">Trivia</span></span></p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr style="vertical-align: top;" lang="en"> <td colspan="2" style="background-color: white; color:black; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: white; color:black; text-align: center;">Revision as of 15:20, 29 June 2025</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l22" >Line 22:</td> <td colspan="2" class="diff-lineno">Line 22:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Trivia==</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Trivia==</div></td></tr> <tr><td class='diff-marker'>−</td><td style="color:black; 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>In the title text, &quot;Magnetohydrodynamics&quot; was misspelled as &quot;Magnetohydrody'''an'''mics. This was later fixed.</div></td><td class='diff-marker'>+</td><td style="color:black; 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>In the title text, &quot;Magnetohydrodynamics&quot; was misspelled as &quot;Magnetohydrody'''an'''mics<ins class="diffchange diffchange-inline">&quot;</ins>. This was later fixed.</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>{{comic discussion}}</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>{{comic discussion}}</div></td></tr> </table>

Whoop whoop pull up https://www.explainxkcd.com/wiki/index.php?title=1851:_Magnetohydrodynamics&diff=367668&oldid=prev 2025-03-02T16:47:41Z

<p>added <a href="/wiki/index.php/Category:Comics_edited_after_their_publication" title="Category:Comics edited after their publication">Category:Comics edited after their publication</a> using <a href="http://commons.wikimedia.org/wiki/Help:Gadget-HotCat" class="extiw" title="commons:Help:Gadget-HotCat">HotCat</a></p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr style="vertical-align: top;" lang="en"> <td colspan="2" style="background-color: white; color:black; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: white; color:black; text-align: center;">Revision as of 16:47, 2 March 2025</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l30" >Line 30:</td> <td colspan="2" class="diff-lineno">Line 30:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Comics featuring Megan]]</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Comics featuring Megan]]</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Physics]]</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Physics]]</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="color:black; 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:Comics edited after their publication]]</ins></div></td></tr> </table>

FaviFake https://www.explainxkcd.com/wiki/index.php?title=1851:_Magnetohydrodynamics&diff=367667&oldid=prev 2025-03-02T16:47:33Z

<p>‎<span dir="auto"><span class="autocomment">Trivia</span></span></p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr style="vertical-align: top;" lang="en"> <td colspan="2" style="background-color: white; color:black; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: white; color:black; text-align: center;">Revision as of 16:47, 2 March 2025</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l22" >Line 22:</td> <td colspan="2" class="diff-lineno">Line 22:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Trivia==</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Trivia==</div></td></tr> <tr><td class='diff-marker'>−</td><td style="color:black; 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 class="diffchange diffchange-inline">*</del>In the title text <del class="diffchange diffchange-inline">''</del>Magnetohydrodynamics<del class="diffchange diffchange-inline">'' </del>was misspelled as <del class="diffchange diffchange-inline">''</del>Magnetohydrody'''an'''mics<del class="diffchange diffchange-inline">''</del>.</div></td><td class='diff-marker'>+</td><td style="color:black; 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>In the title text<ins class="diffchange diffchange-inline">, &quot;</ins>Magnetohydrodynamics<ins class="diffchange diffchange-inline">&quot; </ins>was misspelled as <ins class="diffchange diffchange-inline">&quot;</ins>Magnetohydrody'''an'''mics<ins class="diffchange diffchange-inline">. This was later fixed</ins>.</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>{{comic discussion}}</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>{{comic discussion}}</div></td></tr> </table>

FaviFake https://www.explainxkcd.com/wiki/index.php?title=1851:_Magnetohydrodynamics&diff=347433&oldid=prev 2024-07-28T20:51:12Z

<p>‎<span dir="auto"><span class="autocomment">Explanation: </span> Given the pointer from the objections in the Talk comment, I found that this rewrite better summarises *my* interpretation than either of the other ways...</span></p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr style="vertical-align: top;" lang="en"> <td colspan="2" style="background-color: white; color:black; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: white; color:black; text-align: center;">Revision as of 20:51, 28 July 2024</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l11" >Line 11:</td> <td colspan="2" class="diff-lineno">Line 11:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>In this comic, [[Ponytail]] explains to [[Cueball]] that the Sun's atmosphere is a super hot {{w|Plasma (physics)|plasma}} controlled by &quot;{{w|magnetohydrodynamics}}&quot; (a real word), the study of magnetic properties of electrically conducting fluids. This is true, as plasma is both electrically charged (following the laws of electrodynamics) and a fluid (following the laws of hydrodynamics). However, the combination is so difficult for Cueball that he finds it easier to comprehend any statements containing the word &quot;magnetohydrodynamic&quot; by dropping the central part of the word (&quot;netohydrodynam&quot;). Thus, he pretends that Ponytail instead said &quot;The Sun's atmosphere is a superhot plasma governed by ''magic'' forces&quot;. If Cueball really thinks that magic is more comprehensible than magnetohydrodynamics, then considering just how vaguely and inconsistently magic is portrayed across fiction, that must mean that magnetohydrodynamics is really, ''really'' hard!{{Citation needed}}</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>In this comic, [[Ponytail]] explains to [[Cueball]] that the Sun's atmosphere is a super hot {{w|Plasma (physics)|plasma}} controlled by &quot;{{w|magnetohydrodynamics}}&quot; (a real word), the study of magnetic properties of electrically conducting fluids. This is true, as plasma is both electrically charged (following the laws of electrodynamics) and a fluid (following the laws of hydrodynamics). However, the combination is so difficult for Cueball that he finds it easier to comprehend any statements containing the word &quot;magnetohydrodynamic&quot; by dropping the central part of the word (&quot;netohydrodynam&quot;). Thus, he pretends that Ponytail instead said &quot;The Sun's atmosphere is a superhot plasma governed by ''magic'' forces&quot;. If Cueball really thinks that magic is more comprehensible than magnetohydrodynamics, then considering just how vaguely and inconsistently magic is portrayed across fiction, that must mean that magnetohydrodynamics is really, ''really'' hard!{{Citation needed}}</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>−</td><td style="color:black; 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>In the title text, [[Randall]] riffs on the <del class="diffchange diffchange-inline">sheer difficulty </del>of <del class="diffchange diffchange-inline">magnetohydrodynamics, claiming </del>that <del class="diffchange diffchange-inline">they are as simple and understandable as </del>{{w|Maxwell's equations}} <del class="diffchange diffchange-inline">and the {{w|Navier–Stokes equations}} -- which </del>is <del class="diffchange diffchange-inline">to say, </del>not <del class="diffchange diffchange-inline">at all. Maxwell's equations require an advanced knowledge of calculus to even be able to interpret the symbols used, </del>and <del class="diffchange diffchange-inline">the </del>{{w|<del class="diffchange diffchange-inline">Navier–Stokes existence and smoothness|solutions of </del>Navier–Stokes equations}} are <del class="diffchange diffchange-inline">on the </del>{{w|Millennium Prize Problems|<del class="diffchange diffchange-inline">Millennium Problems list</del>}}. <del class="diffchange diffchange-inline">Randall also notes </del>the <del class="diffchange diffchange-inline">alarming frequency with which </del>the <del class="diffchange diffchange-inline">subject </del>of <del class="diffchange diffchange-inline">magnetohydrodynamics </del>is <del class="diffchange diffchange-inline">paired </del>with {{w|quantum mechanics}} and the {{w|theory of relativity}}<del class="diffchange diffchange-inline">; he sarcastically quips </del>that <del class="diffchange diffchange-inline">physicists must find magnetohydrodynamics so easy </del>to <del class="diffchange diffchange-inline">work with, since </del>they'<del class="diffchange diffchange-inline">re so compelled to spice it up</del>.</div></td><td class='diff-marker'>+</td><td style="color:black; 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>In the title text, [[Randall]] riffs on the <ins class="diffchange diffchange-inline">nature </ins>of <ins class="diffchange diffchange-inline">two different types of equations. It suggests </ins>that {{w|Maxwell's equations}} <ins class="diffchange diffchange-inline">are intuitive (this </ins>is not <ins class="diffchange diffchange-inline">how they are considered) </ins>and <ins class="diffchange diffchange-inline">that </ins>{{w|Navier–Stokes equations}} are <ins class="diffchange diffchange-inline">trivial to solve (also far from true, being a </ins>{{w|Millennium Prize Problems|<ins class="diffchange diffchange-inline">prizeworthy problem</ins>}}<ins class="diffchange diffchange-inline">)</ins>. <ins class="diffchange diffchange-inline">The suggestion being that magnetohydrodynamics is both intuitive and comes with easy solutions (based upon </ins>the <ins class="diffchange diffchange-inline">other assertions, one can safely assume that </ins>the <ins class="diffchange diffchange-inline">chances </ins>of <ins class="diffchange diffchange-inline">such are low). But physicists, it is purported, like to 'spice up' anything that </ins>is <ins class="diffchange diffchange-inline">too mundane, </ins>with <ins class="diffchange diffchange-inline">words commonly encountered when discussing </ins>{{w|quantum mechanics}} and the {{w|theory of relativity}}<ins class="diffchange diffchange-inline">. This also leaves us with the possibility </ins>that <ins class="diffchange diffchange-inline">even these two fields are littered with the buzzwords we all know and love just </ins>to <ins class="diffchange diffchange-inline">make them 'seem less boring than </ins>they <ins class="diffchange diffchange-inline">are</ins>'.</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Transcript==</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Transcript==</div></td></tr> </table>

172.69.195.183 https://www.explainxkcd.com/wiki/index.php?title=1851:_Magnetohydrodynamics&diff=283509&oldid=prev 2022-05-26T19:59:34Z

<p>Reverted edits by <a href="/wiki/index.php/Special:Contributions/Donald_Trump" title="Special:Contributions/Donald Trump">Donald Trump</a> (<a href="/wiki/index.php?title=User_talk:Donald_Trump&amp;action=edit&amp;redlink=1" class="new" title="User talk:Donald Trump (page does not exist)">talk</a>) to last revision by <a href="/wiki/index.php/User:CRLF" title="User:CRLF">CRLF</a></p> <a href="//www.explainxkcd.com/wiki/index.php?title=1851:_Magnetohydrodynamics&amp;diff=283509&amp;oldid=281830">Show changes</a>

Theusaf https://www.explainxkcd.com/wiki/index.php?title=1851:_Magnetohydrodynamics&diff=281830&oldid=prev 2022-05-26T19:03:53Z

<p>Reverted edit by anti-crap user</p> <a href="//www.explainxkcd.com/wiki/index.php?title=1851:_Magnetohydrodynamics&amp;diff=281830&amp;oldid=280416">Show changes</a>

Donald Trump https://www.explainxkcd.com/wiki/index.php?title=1851:_Magnetohydrodynamics&diff=280416&oldid=prev 2022-05-26T18:02:18Z

<p>Reverted vandalism with <a href="/wiki/index.php/User:CRLF/OneClickUndo.js" title="User:CRLF/OneClickUndo.js">User:CRLF/OneClickUndo.js</a></p> <a href="//www.explainxkcd.com/wiki/index.php?title=1851:_Magnetohydrodynamics&amp;diff=280416&amp;oldid=277972">Show changes</a>

CRLF https://www.explainxkcd.com/wiki/index.php?title=1851:_Magnetohydrodynamics&diff=277972&oldid=prev 2022-05-26T17:07:39Z

<p>Reverted edit by anti-crap user</p> <a href="//www.explainxkcd.com/wiki/index.php?title=1851:_Magnetohydrodynamics&amp;diff=277972&amp;oldid=268398">Show changes</a>

Donald Trump https://www.explainxkcd.com/wiki/index.php?title=1851:_Magnetohydrodynamics&diff=268398&oldid=prev 2022-05-11T18:48:12Z

<p>Reverted edits by <a href="/wiki/index.php/Special:Contributions/%F0%9F%91%96%F0%9F%94%A5" title="Special:Contributions/👖🔥">👖🔥</a> (<a href="/wiki/index.php?title=User_talk:%F0%9F%91%96%F0%9F%94%A5&amp;action=edit&amp;redlink=1" class="new" title="User talk:👖🔥 (page does not exist)">talk</a>) to last revision by <a href="/wiki/index.php/User:Jacky720" title="User:Jacky720">Jacky720</a></p> <a href="//www.explainxkcd.com/wiki/index.php?title=1851:_Magnetohydrodynamics&amp;diff=268398&amp;oldid=265782">Show changes</a>

Theusaf https://www.explainxkcd.com/wiki/index.php?title=1851:_Magnetohydrodynamics&diff=265782&oldid=prev 2022-05-11T17:27:16Z

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