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27 March 2023

  • 03:2503:25, 27 March 2023 diff hist +150 Non-uniform rational B-spline→‎Historical background: explained the physical nature of those "ducks" lead, a few inches long, & the "beak" pressing against the spline. Yacht-design used to rely on 'em, I'm not certain which book(s) it was that explained & showed photos of 'em: I just checked my copy of "Yacht Design by Perry" and didn't see the photo I'm remembering in its drafting-section, so I don't remember which book it was that had the photo & instruction, sorry. Tags: Mobile edit Mobile web edit

24 March 2023

  • 17:3717:37, 24 March 2023 diff hist +19 Dynamic pressureidentified that the variable that /looks like/ a p is the Greek letter rho. It took me ages to understand that, because too many people assumed it was known to all... Tags: Mobile edit Mobile web edit

27 December 2022

10 December 2022

  • 09:5309:53, 10 December 2022 diff hist +254 Gamma wave→‎Controversy: whichever EEG textbook I had, a dozen years ago or so, dictated that we add electrodes to sides-of-neck, heart, & eyelid, to capture the muscle-signal, so we could see what "EEG" signal *wasn't* EEG. I believe clinical doesn't do this, so it may have been a sciebce/research standard op procedure. Tags: Mobile edit Mobile web edit

13 November 2022

25 October 2022

29 May 2022

20 May 2022

  • 06:1706:17, 20 May 2022 diff hist +25 Fluid dynamics→‎Newtonian versus non-Newtonian fluids: changed the false "all fluids are viscous" to the correct "all fluids, except superfluids, are viscous" making the term "superfluids" be a wikipedia-link to the article on zero-viscosity fluids. Tags: Mobile edit Mobile web edit
  • 05:4905:49, 20 May 2022 diff hist +45 Küssner effect→‎External links: identified that the 2nd link is also a dead link. I'm not good with The Wayback Machine, so somebody else can get the archive.org links, for *both* external-links, fixed. the Wayback machine has NO archive of all the equations, in any of its snapshots ( every single snapshot is missing most of its equation-images ), so the information has apparently been lost. https://web.archive.org/web/20170709175225/https://soliton.ae.gatech.edu/labs/windtunl/classes/unstaero/kussner... Tags: Mobile edit Mobile web edit

16 May 2022

12 May 2022

2 April 2022

22 February 2022

4 February 2022

30 December 2021

26 December 2021

24 December 2021

6 December 2021