Template:Did you know nominations/Quadratrix of Hippias
- 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. You can locate your hook here. No further edits should be made to this page.
The result was: promoted by HurricaneZeta (talk) 14:11, 28 January 2026 (UTC)
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Quadratrix of Hippias
Rolling shutter photograph of a spinning airplane propellor
- ... that a photograph of an airplane propellor taken by a camera with a rolling shutter (pictured) may distort the propellor into curves resembling the quadratrix of Hippias?
- Source: https://doi.org/10.1088%2F0031-9120%2F47%2F5%2F530, "This paper deals with effects that appear on photographs of rotating objects when taken by a photo finish camera, a rolling shutter camera or a computer scanner." Figure 2 is "A snapshot of a spinning propeller, taken by a phone camera", resembling the thumbnail photo in its shape (but of worse quality) The source also provides mathematical formulas equivalent to those of the quadratrix of Hippias but those are difficult to quote.
Improved to Good Article status by David Eppstein (talk).
Number of QPQs required: 1. Nominator has 192 past nominations.
—David Eppstein (talk) 20:57, 26 December 2025 (UTC).
article is a recent GA, long enough, and within policy. Hook is short enough and interesting. QPQ is complete. Photo appears to be appropriately licensed for the Main Page. « Gonzo fan2007 (talk) @ 17:51, 29 December 2025 (UTC)
