One of the interesting things about boiling is the phenomenon of nucleating a bubble.
There are two forces acting on a bubble: the surface tension forces that cause the bubble to contract, and the pressure forces that cause it to
expand. The surface forces are related to the radius of the bubble. When the bubble is very small, the surface forces dominate and cause the bubble
to contract rather than expand. This means that any microscopic bubble smaller than a critical radius will be reabsorbed. Making a bubble is
actually a difficult thing to do.
This means that a liquid will actually rise above its boiling temperature before boiling will actually occur. This is known as superheating.
What happens in practice is that bubbles will form at a nucleation site -- this might be the surface of the container, a suspended solid particle, a
phase boundary, a boiling chip or whatever. This allows the bubble to have a different shape with a larger radius. It can therefore grow in volume
when it would otherwise be below the critical radius.
Once it is energetically favourable for bubbles to grow they can do so rapidly. This can create significant shock waves through the liquid which
causes bumping and spattering.Yttrium2 - 4-1-2019 at 20:47
wowfusso - 5-1-2019 at 01:39
Is this serious? If yes then can we just ban these freeriders? If no then can we just ban these trolls?j_sum1 - 5-1-2019 at 01:51
Yttrium2 is not a troll. Just someone curious. Admittedly many of his questions can be answered by simple research, but there are some good ones in
the mix. And several have prompted some in-depth discussion.
There is a compilation thread somewhere: Yttrium2's thread of many questions.XeonTheMGPony - 5-1-2019 at 07:00
Put some menial effort in and then perhaps we'd take you a bit more seriously
Superheat(ing) type either in google and you get in depth information.
Same with boiling, same with water.
If you don't even put effort in asking the question why would I bother giving a good answer?
BOBardment - 6-1-2019 at 11:40
Water - H20
Superheating - Copy and paste into google
Spatter - Copy and paste into google
You used all three of your wishes, have a nice life.lordcookies24 - 6-1-2019 at 13:16
you should know better than asking a question like this without showing any sort of evidence that you did research on it.
