Wikipedia:Reference desk/Archives/Science/2023 January 6

= January 6 =

square spasms in the right leg
Is it due to a transfer virus or another source of lack of proteins? And if yes, to what frequencies? Enrico Spazzini 36 (talk) 19:51, 5 January 2023 (UTC) Martin of Sheffield (talk) 20:18, 5 January 2023 (UTC)
 * I'm wondering what a "square" spasm would be. ←Baseball Bugs What's up, Doc? carrots→ 21:17, 5 January 2023 (UTC)
 * I'm even wondering if a doctor would be able to understand anything in this jumbled mess. But anyway... 80.214.28.89 (talk) 22:19, 5 January 2023 (UTC)
 * Don't feed the trolls. --Lambiam 23:24, 5 January 2023 (UTC)
 * Not even to ask, "Kenneth, what are the frequencies?"? —Tamfang (talk) 01:59, 6 January 2023 (UTC)

Seedless fruits questions.
Is there disadvantages to eating seedless fruits, because they were breded differently? Seedless watermelon, tangerines, and grapes. As a health benefits question. I'm also confused as to how seedless fruit are made. Wikipedia has an article on seedless fruit, which says things like developed without fertilization (or fertilization without ovules), or and without pollination. How does fruit even reproduce without pollination? How does fruit fertilize without ovules? Thanks. 67.165.185.178 (talk) 13:31, 6 January 2023 (UTC).
 * Many fruits grown for food crops are propagated by grafting and not by sexual reproduction. This allows for consistent fruit from year-to-year, as sexual reproduction can cause genetic mixing that will change the characteristics of fruit.  -- Jayron 32 14:13, 6 January 2023 (UTC)
 * I find that seedless watermelons and grapes always taste unripe (bleh). Doubtless this is because the pathways for the development of seeds and for ripening are intertwined. Abductive  (reasoning) 19:30, 6 January 2023 (UTC)
 * De gustibus non est disputandum -- Jayron 32 19:36, 6 January 2023 (UTC)

What happens to bacteria in your intestines during fasting.
Of course I see so much health videos on Youtube lately on saying no to carbs, and no to sugars, and so avoid eating bread/rice. And some of the videos say, we eat for the health of the bacteria in our intestines. And a lot of videos talk about fasting and intermitting fasting. But what no 1 seems to cover is, when we fast, what happens to our bacteria, do they not get starved? Do they die off, and get excreted out? Such that, do your intestines get filled with new bacteria again, the next time you eat? 67.165.185.178 (talk) 13:35, 6 January 2023 (UTC).
 * If you Google "gut flora during fasting", you get a number of good, scholarly works, such as [This Nature article and This NIH article, among others. --[[User:Jayron32| Jayron ]]32 14:11, 6 January 2023 (UTC)

Chemistry: dissolving formula.
I been seeing comments on science forums of people saying 1000 g of water (1 L) can dissolve 2000 g of sugar, and 30-40 g of salt. But they didn't say how they came up with them. What formula are they using? I never remembered a dissolving formula in college, heh. 67.165.185.178 (talk) 13:38, 6 January 2023 (UTC).


 * IP editor. Accurate solubility values are found by measurement rather than calculation and are very temperature dependent. Pubchem has some values available and their source at this URL (for sucrose, other sugars will vary). Mike Turnbull (talk) 13:58, 6 January 2023 (UTC)
 * That sounded to me like Bacon's monks debating the number of teeth a horse has. Still it could well be an interesting project to find one. NadVolum (talk) 13:59, 6 January 2023 (UTC)
 * Lots of calculation packages can give approximate values as estimates. See Chemicalize for example. Mike Turnbull (talk) 14:06, 6 January 2023 (UTC)
 * Has no theory been developed to approach this from first principles? Isn't it possible to calculate the energy associated with various solute concentrations and find the minimum? --Lambiam 20:58, 6 January 2023 (UTC)
 * There's the article Solubility equilibrium and I guess people have put a fair amount of thought into it which doesn't get near Wikipedia. NadVolum (talk) 21:37, 6 January 2023 (UTC)