Wikipedia:Reference desk/Archives/Science/2021 July 1

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July 1

Food bubbling without boiling

Sometimes when I reheat food from fridge, it starts to produce bubbling sounds. Me, thinking it has quickly reached boiling, turn off the burner, but after tasting the food is still cold, so I start to reheat it again. What's behind this fake boiling process? 212.180.235.46 (talk) 12:00, 1 July 2021 (UTC)

It's localized boiling, which you get especially with thick foods as it can't form convection currents, i.e it's boiling at the bottom of the pan only. Solution is to stir it.--Shantavira|^{feed me} 12:43, 1 July 2021 (UTC)

Yes, if you can, though I seem to find it more often in semi-solids like spaghetti and lasagna. The solution in those cases is to re-heat at a lower temperature (but for longer), perhaps in the oven. Matt Deres ?(talk) 12:59, 1 July 2021 (UTC)

What object of the universe Is it?

I apologize for the stupid question, I was browsing the Instagram home page and I saw this picture https://www.instagram.com/p/CQgFUZujwVT/ . I searched It on our Wikipedia, but I couldn't figure out which objet of our universe it is. Some amateur astronomer could help me to classify it? Thank you very much :) --37.163.0.149 (talk) 22:44, 1 July 2021 (UTC)

Are you asking what's in the picture? (If not, please explain your question more.) I believe it's the Lagoon Nebula. The Instagram page gives its identifier as NGC 6523, and the same number appears at the beginning of our article on the Lagoon Nebula — NGC is the New General Catalogue — and also, the Instagram page's description is clearly in Italian, and it:Nebulosa Laguna covers the Lagoon Nebula. Nyttend backup (talk) 22:51, 1 July 2021 (UTC)

Wow nice, thank you so much for the quick reply. And yes I was asking about the Page on wiki so i can read about It. Maybe someone can explain what NGC is, I'm pretty curious now :D --37.160.47.2 (talk) 23:01, 1 July 2021 (UTC)

As for the NGC, see Nyttend's link. --174.94.31.124 (talk) 01:20, 2 July 2021 (UTC)

As an aside, it really helped to narrow things down by specifying "of the universe". I'm going to use that myself; "Who of the universe is this?", "Where in the universe is that?"... Cheers. nagualdesign 00:07, 2 July 2021 (UTC)

Which universe? And why in the world do you think this will be helpful?  --Lambiam 03:30, 2 July 2021 (UTC)

To be fair, it might serve to distinguish between real objects and imaginary ones depicted in artwork. {The poster formerly known as 87.81.230.195} 2.122.0.163 (talk) 08:35, 2 July 2021 (UTC)

That's probably a false friend. English uses "universe" for phrases like "the expansion of the universe" but "(outer) space" for "spaceship" or "floating in outer space". Many European languages use the same (choice of multiple) word(s) in both situations, usually a cognate/calque of the words that led to English "universe", "cosmos" etc. Elephas X. Maximus (talk) 22:18, 2 July 2021 (UTC)

Indeed, the first sense given in the Italian Wiktionary for universo is "(astronomia) (fisica) l'insieme dei corpi celesti e lo spazio dove essi sono situati" ("(astronomy) (physics) the ensemble of celestial bodies and the space in which they are situated"). NGC 6523 is a celestial body.  --Lambiam 10:25, 3 July 2021 (UTC)