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Old January 26th 05, 03:18 PM posted to uk.sci.weather
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Default why is ice slippery?


"Jack Harrison" wrote in message
.. .

"JPG" wrote
Nearly everyone has experienced
the strange effect when touching the coils of your home freezer and your
fingers
sticking to it. I had a similar experience in Canada when at -20 C I got
my
hand stuck to the car door handle.


I had a parallel problem at Gatwick one night. The car door lock was iced
up and as I tried to turn the key, the torque was sufficient to twist me
instead of the key. The ground was very slippery, my feet went from under
me and I landed quite gently on my bum. Mind you, half an hour earlier,
I had put 20 tonnes of aircraft smoothly (?!) onto the runway, so I was in
good practice at doing gentle touchdowns:-)

Jack

Lol. thanks for the lovely picture



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Old January 26th 05, 08:34 PM posted to uk.sci.weather
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Default why is ice slippery?

mjones wrote:
sticking to it. I had a similar experience in Canada when at -20 C I got my
hand stuck to the car door handle.

Ouch.
How did you get it off - simply pull hard (so losing some skin) and
get someone to douse it with water?


An urban legen horror story told in cold countries:
Group of boys are at railway tracks in winter.
The others tell the youngest to lick rail.
His tongue sticks.
Rain approaches.
All they can do is p** him loose.


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Old January 27th 05, 08:35 AM posted to uk.sci.weather
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Default why is ice slippery?

SteveS wrote:

"bob watkinson" wrote in message
...
Why is ice slippery? When other substances such as metal or candlewax
reach a temperature that solidifies them they are not slippery so why
water?


Interesting question. Google found me the following:

http://www.exploratorium.edu/hockey/ice2.html


"These new findings challenge long-held theories about why ice is slippery.
In the past, scientists believed that either pressure or friction melted
the ice, creating a water lubricant that allows skates and pucks to slide."

The above statement makes me wonder what is meant by "new", "in the past"
and, possibly, "scientists".

A book on ice published over forty years ago quashed the idea that
slipperiness was due to surface lubrication resulting from
pressure-melting. It explained that the surface slippery layer was due to
peculiar characteristics of the molecular structure of ice at the surface.

Yet another "new" discovery that is no such thing.

Graham
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Old January 28th 05, 12:34 PM posted to uk.sci.weather
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Default why is ice slippery?


"Elena Saltikoff" schreef in bericht
...
mjones wrote:
sticking to it. I had a similar experience in Canada when at -20 C I
got my
hand stuck to the car door handle.

Ouch. How did you get it off - simply pull hard (so losing some
skin) and
get someone to douse it with water?


An urban legen horror story told in cold countries:
Group of boys are at railway tracks in winter.
The others tell the youngest to lick rail.
His tongue sticks.
Rain approaches.
All they can do is p** him loose.


Something similar:
Told for real in a Dutch paper, many years ago




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