https://www.explainxkcd.com/wiki/api.php?action=feedcontributions&feedformat=atom&user=81.97.185.248explain xkcd - User contributions [en]2026-07-02T18:44:39ZUser contributionsMediaWiki 1.30.0https://www.explainxkcd.com/wiki/index.php?title=491:_Twitter&diff=30642491: Twitter2013-03-21T02:25:59Z<p>81.97.185.248: fix title text rhyme; sentence case</p>
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<div>{{comic<br />
| number = 491<br />
| date = October 20, 2008<br />
| title = Twitter<br />
| image = twitter.png<br />
| titletext = If long tooltips / cut off for you / then upgrade from / Firefox 2 / Burma Shave<br />
}}<br />
<br />
==Explanation==<br />
This comic plays off of an old shaving cream product's advertising campaign employed on American highways from 1925 to 1963. These ads used short poems, each line arranged sequentially on a sign along a highway, the last line always being "Burma Shave", the name of the shaving cream. Originally these ads only described the product, but others included driving safety messages. <br />
{{Incomplete}}<br />
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==Transcript==<br />
:[Cueball is sitting in a caster office chair typing onto a smartphone]<br />
: ''Beep beep''<br />
<br />
:Phone: "On Twitter feeds"<br />
<br />
:[More typing]<br />
<br />
:Phone: "an odd regression:"<br />
<br />
:[More typing]<br />
<br />
:Phone: "ancient memes"<br />
<br />
:[More typing]<br />
<br />
:Phone: "find new expression"<br />
<br />
:[More typing]<br />
<br />
:Phone: "Burma-Shave"<br />
<br />
{{comic discussion}}<br />
[[Category:Comics featuring Cueball]]</div>81.97.185.248https://www.explainxkcd.com/wiki/index.php?title=1145:_Sky_Color&diff=223681145: Sky Color2012-12-10T06:46:47Z<p>81.97.185.248: /* Transcript */ proportional to 1/''<span title="lambda">λ</span>''<sup>4</sup></p>
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<div>{{comic<br />
| number = 1145<br />
| date = December 10, 2012<br />
| title = Sky Color<br />
| image = sky color.png<br />
| titletext = Feynman recounted another good one upperclassmen would use on freshmen physics students: When you look at words in a mirror, how come they're reversed left to right but not top to bottom? What's special about the horizontal axis?<br />
}}<br />
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==Explanation==<br />
{{W|Rayleigh scattering}} is the phenomenon that explains the color of the sky.<br />
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==Transcript==<br />
:[Girl and her mother, Megan. Megan is at a desk and facing the girl.]<br />
:Girl: Mommy, why is the sky blue?<br />
:Megan: Rayleigh scattering! Short wavelengths get scattered ''way'' more (proportional to 1/''<span title="lambda">λ</span>''<sup>4</sup>). Blue light dominates because it's so short.<br />
:Girl: Oh.<br />
:Girl: So why ''isn't'' the sky violet?<br />
:Megan: Well, because, uh... ...hmm.<br />
<br />
{{comic discussion}}<br />
[[Category:Comics featuring Megan]]<br />
[[Category:Physics]]<br />
[[Category:My Hobby]]</div>81.97.185.248