Boiling is extremely interesting when you get down into the details. But yes, a 3 fps potato slideshow is rather boring.
Even without the physics side, some people claim that watched pot never boils, so the fact that it did indeed boil is interesting.
but u can clearly see the pot boiling before the recording
so that doesn’t break the claim
(don’t try to get OP executed in the first post in 6 moths, that isn’t how we welcome our guests ;) )
not interesting enough, you get a pass
just know that u were that close to be interesting (the low quality saved u)
Watching a liquid turn into a gas is actually pretty fascinating.
If you stir it you will see the middle boils and the outside edge doesn’t.
The reason is that cold water is HEAVIER than hot water so the cold water gets pushed to the edge while the hottest water is in the center.
Hmm, I would assume it’s moreso because the water on the edge moves faster, so the steam can’t collect there to form noticeable bubbles…
This is also because, typically, the stove’s burner is hotter in the center and less hot around the outside edge. As is the pot itself, because the outer walls of the pot (not on the burner) are radiating away some of their heat to the surrounding air.
But while this ‘welling up in the center, flowing down along the sides’ pattern is the simplest and most typical convection current you’ll see in a pot of water on a stove, it’s by no means the only convection current that might form. Depending on the size and shape of the pot and the heat distribution of the burner, you might get more complicated and more interesting patterns of convection currents. For example, with a small pot on a large gas burner that only heats in a ring shape, you might end up with the reverse of this current: hot water welling up around the outside edges, then cooling and falling in the center. And it’s possible to have a complex pattern of multiple convection currents interacting with each other.
