19 year old father microwaves baby- for reals.

[imsotyerred]

Yeah you can.

-Erik

how so

[Vigrotica]

put him in the fucking oven dude. thats sick

[nando]

how so

it's called superheated liquids. go look it up sometime...

[netcsk]

Yeah you can.

-Erik

No you can't. Given the pressure, composition, etc. (i.e. any variable that boiling depends on), you can't reach boiling temperature of a substance without boiling.

[nando]

No you can't. Given the pressure, composition, etc. (i.e. any variable that boiling depends on), you can't reach boiling temperature of a substance without boiling.

http://www.newton.dep.anl.gov/askasci/chem00/chem00636.htm

[erik325i]

how so

As nando stated above, it's called superheating.

Why is it possible to heat water above its boiling temperature?

Let's talk only about pure water, and only water at or close to atmospheric pressure. At the surface between air and water, or between steam and water, water boils at 100 °C. Water boils at 100 °C if there is already a bubble of steam (or air) present. But in the absence of bubbles, water can be heated above 100 °C. There are two reasons. First, to make a stable bubble, a lot of water molecules in the same small area must form steam. This is improbable. Second, it takes extra energy to form the bubble itself: energy to push the water out of the way, and energy to make the surface between water and steam. Once a bubble forms (a process called nucleation), it is easy to increase its size. So the superheated water nearby evaporates very quickly, producing a large volume of steam.
Smooth containers do not have bubbles of air clinging to their sides. Rough walled or scratched containers may hold microscopic bubbles in their cracks. These become nucleii for boiling. Even a crack that is fully filled with water can be a boiling nucleus because it reduces the required area of the water-vapour surface.

-Erik

[erik325i]

No you can't. Given the pressure, composition, etc. (i.e. any variable that boiling depends on), you can't reach boiling temperature of a substance without boiling.

What is superheating?

In this context superheating means the heating of a liquid to a temperature above its normal boiling point. The superheated state is unstable, and it can very rapidly turn into liquid at the boiling point, plus a substantial quantity of vapour.

[LINUS]

In a context we can all understand, it's quite possible to superheat water in a microwave.

For example, that is why they warn people not to use brand new mugs to heat water in a microwave. There are no fissures, scratches or small defects to become a point for the liquid tension to release - and the resulting vapor boil to come to the surface.

That's why when someone then drops a teabag, some sugar - or whatever into the liquid it gives the superheated water a vapor release point, and generally you either see someone burn their hand badly, or if they are unlucky enough to have their face over it - well, self explanitory.

Sometimes there's enough force that you see the bottom of a mug blown clean out.

So yes, very possible. That's why you put a few grains of sugar in the water before nuking it - then you are safe to drop a teabag in after heating the water.

[Zya8187]

This is a great thread it started off as concerns for a small child now we have grown men fighting about superheating boiling points. HAHA :D

[Il Duce]

THIS JUST IN-


HotPockets (r) Brand is announcing their newest flavor: Baby. Also in the works "Baby with Sausage".


Oh boy I can't wait.

[imsotyerred]

i stand corrected

[Tree18is]

c'mon josh- you know the rules.... Innocent until proven guilty*







*unless you have money

If that sonofabitch was in the Military hes guilty in till proven innocent.
if it was Texas, death penalty for sure.

[s0urce]

also wrong, you can't reach boiling point temps without boiling

You're wrong.

It is called superheating.....put a mug of water in the microwave for 5 minutes, pull it out and pour some room temp water in it.

Stand back when you do this.

:drink:

EDIT: WOW...next time I'll read the 50 posts above me saying the exact same thing.

[mitch500]

99 years and a 10,000 dollar fine, lik he'd pay 10 grand if you were in prison for life . what a sick fuckin douche.

[Kate525i]

Guys...... you don't have to do this with a microwave, that's why they made pressure cookers. It allows you to cook something at a much higher temp without burning it. Put nothing but water in it, and the way the cooker works it will go over the boiling temp and not boil because of the pressure forced on the surface of the water.