https://www.explainxkcd.com/wiki/api.php?action=feedcontributions&feedformat=atom&user=T7685explain xkcd - User contributions [en]2026-04-07T22:38:47ZUser contributionsMediaWiki 1.30.0https://www.explainxkcd.com/wiki/index.php?title=Talk:26:_Fourier&diff=368485Talk:26: Fourier2025-03-10T00:49:08Z<p>T7685: Adding inverse fourier graph</p>
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Isn't the cat also imaginary because its Fourier transform isn't symmetric?<br />
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I feel like there's another joke in that his cat is "imaginary" or has complex components.<br />
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[[User:Shdwdrgn|Shdwdrgn]] ([[User talk:Shdwdrgn|talk]]) 06:33, 8 October 2014 (UTC)shdwdrgn<br />
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Picking up on shdwdrgn's comment above, how interesting would the Fourier transform of Schroedingers's cat be. I guess it would consist of two overlaid graphs neither of which would be certain until you actually looked at it.[[User:EditorGonk|EditorGonk]] ([[User talk:EditorGonk|talk]]) 09:38, 20 July 2018 (UTC)<br />
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Might this also be a Garfield joke? Garfield's veterinarian is named Liz. Although Garfield, being roughly a three-dimensional ovoid, would probably end up with a much different looking Fourier transform than what is depicted here.<br />
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--[[Special:Contributions/199.27.130.246|199.27.130.246]] 21:26, 9 October 2014 (UTC)<br />
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I think the transform may be of the movements of various parts of the cat. Cats tend to move their ears and heads a lot, and other parts, less so. What tipped me off is the spike at the tip of the tail. Cats typically twitch the very tip of their tail in a rhythmic fashion. [[Special:Contributions/108.162.216.192|108.162.216.192]] 21:52, 2 March 2015 (UTC)<br />
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Coincidentially, the Fourier transform of a cat was used in a 2003 paper on the so-called phase problem in protein crystallography (figure 3) to illustrate the relevance of phase and amplitude information. See http://journals.iucr.org/d/issues/2003/11/00/ba5050/index.html<br />
and http://journals.iucr.org/d/issues/2003/11/00/ba5050/ba5050fig3.html<br />
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Can someone do a reverse fourier transform on the cat's graph and post it here please? --[[Special:Contributions/162.158.79.37|162.158.79.37]] 18:12, 14 July 2020 (UTC)Bumpf<br />
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I have done a fourier transform on the graph but sorry to report it's not that interesting. I can't figure out how to upload here so here's an imgur link https://imgur.com/a/APfAxLb (First time contributing sorry if I do something wrong)--[[User:T7685|T7685]] ([[User talk:T7685|talk]]) 00:49, 10 March 2025 (UTC)</div>T7685