The following is an archived discussion of the DYK nomination of the article below. Please do not modify this page. Subsequent comments should be made on the appropriate discussion page (such as this nomination's talk page, the article's talk page or Wikipedia talk:Did you know), unless there is consensus to re-open the discussion at this page. No further edits should be made to this page.
The result was: promoted by SL93 (talk) 20:01, 17 October 2022 (UTC)
Doyle spiral illustrating plant growth in a 1911 Popular Science article
... that circle packings in the form of a Doyle spiral(pictured) were used to model plant growth long before their mathematical investigation by Doyle? Source: Emch, Arnold (November 1911), "Mathematics and engineering in nature", Popular Science Monthly, 79: 450–458, https://archive.org/details/popularsciencemo79newy/page/450/mode/2up
Overall: No problems with the article, pic is nice, and the hook is interesting enough for a broad audience. Karma points for double QPQ. –LordPeterII (talk) 14:18, 14 September 2022 (UTC)
It's a magazine, not a book. Pp. 454–455: "The inner yellow portion of a daisy exhibits a beautiful geometrical arrangement of its elements ... the configuration of the flower (Fig.5)". Of course he doesn't call it a Doyle spiral or a circle packing (that would be anachronistic and impossible for a hook about how those concepts were used much earlier than they were named) but Fig.5 (the one reproduced in the hook image) is a Doyle spiral. —David Eppstein (talk) 23:42, 10 October 2022 (UTC)
No problems with the article, pic is nice, and the hook is interesting enough for a broad audience. Karma points for double QPQ. –LordPeterII (talk) 14:18, 14 September 2022 (UTC)