windshield fluid sprayer

[Bob]

WHOA! What? Was I asleep in high school?  Here on planet earth its a little different...

Phil Payne wrote:

> *This message was transferred with a trial version of CommuniGate(tm) Pro*
> > Once, while skiing, an ex-engineer demonstrated an interesting
> > phenomena around boiling water and cold temperatures.
> >
> > At -40 degrees (figure it out, C or F), take a bucket full of
> > almost boiling water, and fling the water in the air.
> >
> > Guess what happens? (hint: not what you think)
>
> The hot freezes first because excess pressure inside a droplet is T/r, where T is the surface tension and r is the radius.  Two
> effects - surface tension is lower at high temperatures and there is energy available as heat, so much smaller droplets can form.
>
> Mass per unit surface area is less, so freezing is faster.
>
> --
>   Phil Payne
>   http://www.isham-research.com/quattro
>   +44 7785 302 803
>   +49 173 6242039