Sciencemadness Discussion Board
Not logged in [Login ]
Go To Bottom

Printable Version  
Author: Subject: water
Yttrium2
Perpetual Question Machine
**




Posts: 51
Registered: 7-2-2015
Member Is Offline


[*] posted on 4-1-2019 at 16:51
water


explain superheating,\

explain spatter?
View user's profile Visit user's homepage View All Posts By User
Sulaiman
International Hazard
*****




Posts: 3313
Registered: 8-2-2015
Location: UK ... on extended Holiday in Malaysia
Member Is Offline


[*] posted on 4-1-2019 at 17:42


Is Google broken ?

e.g. https://en.wikipedia.org/wiki/Superheating




CAUTION : Hobby Chemist, not Professional or even Amateur
View user's profile View All Posts By User
XeonTheMGPony
International Hazard
*****




Posts: 1626
Registered: 5-1-2016
Member Is Offline

Mood: No Mood

[*] posted on 4-1-2019 at 18:27


Explain di-hydrogen monoxide

Explain total failure due to being lazy

Explain explaining!
View user's profile View All Posts By User
j_sum1
Administrator
********




Posts: 5923
Registered: 4-10-2014
Location: Unmoved
Member Is Offline

Mood: Possessor of a tidy and organised lab. Now to mess it up again.

[*] posted on 4-1-2019 at 18:27


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.
View user's profile View All Posts By User
Yttrium2
Perpetual Question Machine
**




Posts: 51
Registered: 7-2-2015
Member Is Offline


[*] posted on 4-1-2019 at 20:47


wow
View user's profile Visit user's homepage View All Posts By User
fusso
International Hazard
*****




Posts: 1907
Registered: 23-6-2017
Location: 4 ∥ universes ahead of you
Member Is Offline


[*] posted on 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?



View user's profile View All Posts By User
j_sum1
Administrator
********




Posts: 5923
Registered: 4-10-2014
Location: Unmoved
Member Is Offline

Mood: Possessor of a tidy and organised lab. Now to mess it up again.

[*] posted on 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.
View user's profile View All Posts By User
XeonTheMGPony
International Hazard
*****




Posts: 1626
Registered: 5-1-2016
Member Is Offline

Mood: No Mood

[*] posted on 5-1-2019 at 07:00


Quote: Originally posted by Yttrium2  
wow


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?

View user's profile View All Posts By User
BOBardment
Harmless
*




Posts: 32
Registered: 26-12-2018
Location: A random place
Member Is Offline


[*] posted on 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.
View user's profile View All Posts By User
lordcookies24
Hazard to Self
**




Posts: 78
Registered: 2-1-2019
Location: pluto
Member Is Offline

Mood: curious

[*] posted on 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.



View user's profile View All Posts By User

  Go To Top