Fascinating Fact of the Day

[sheepy]

I thought that you didn't put boiling water on the windscreen as it may crack it if there is any weekness

[Gandalf]

Originally posted by sheepy@Apr 10 2006, 03:58 PM
I thought that you didn't put boiling water on the windscreen as it may crack it if there is any weekness

[post=121746]Quoted post[/post]

[/b]

yup, that's the main reason. However, it will freeze faster than cold water so as said you'll be buggered if it's still below 0.

I used to have great fun in the winter when I was a kid. We had sliding patio doors on the front porch so when it was cold, at night I'd boil the kettle then give the runners a good coating of nice hot water and close the door. Result = stuck door in the morning and a day off school

Trouble is, living on the south coast that little trick only worked once

[Vincentvega]

their only jealous PEN cos they didnt know it :whistle:

[Thulsa Doom]

Originally posted by Gandalf@Apr 10 2006, 05:02 PM
yup, that's the main reason. However, it will freeze faster than cold water so as said you'll be buggered if it's still below 0.

[post=121747]Quoted post[/post]

[/b]

I'd like to see some concrete evidence.

In winter, if I pour cold water onto windescreen it freezes pretty damn quick and worsens the situation.
If I use warm water, it thaws it.

[Benny]

Originally posted by Thulsa Doom@Apr 10 2006, 08:27 PM
I'd like to see some concrete evidence.

In winter, if I pour cold water onto windescreen it freezes pretty damn quick and worsens the situation.
If I use warm water, it thaws it.

[post=121770]Quoted post[/post]

[/b]

You have to pour it on slow so there's a constant stream of warm.......that or pish on your car.

[Gandalf]

Originally posted by Thulsa Doom@Apr 10 2006, 07:27 PM
I'd like to see some concrete evidence.

In winter, if I pour cold water onto windescreen it freezes pretty damn quick and worsens the situation.
If I use warm water, it thaws it.

[post=121770]Quoted post[/post]

[/b]

http://math.ucr.edu/home/baez/physics/General/hot_water.html

as mentioned before...

The phenomenon that hot water may freeze faster than cold is often called the Mpemba effect.