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frequency freezing in ice?

frequency freezing in ice? - Physics Forum

frequency freezing in ice? - Physics Forum. Discuss and ask physics questions, kinematics and other physics problems.


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  #1  
Old 02-11-2008, 02:17 AM
SB
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Default frequency freezing in ice?



I had a thought the other day...and well...I thought I would ask those of
you who would know more about this kind of thing.....
If there was a puddle of water...in a city....and it was a freezing cold
night....the noise of the city(cars ..horns etc) all over and around the
water in the puddle.
the puddle freezes solid just as a taxi driver blows his horn....
The question is...does the ice ...hold the frequency of the sound of the
taxi drivers horn? If so can it be copied from the ice ..duplicated in
digital format...and played back? If not ..well it would make a great theme
for a story.
I would love to hear your feedback. (smile)

Steve


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  #2  
Old 02-11-2008, 02:26 AM
N:dlzc D:aol T:com \(dlzc\)
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Default frequency freezing in ice?

Dear SB:

"SB" <[Only registered users see links. ]> wrote in message
news:[Only registered users see links. ]. ..

No.


[Only registered users see links. ]

I read a story once about a panel that had an extremely slow
speed of light internally. Such that panels would be made with a
"12 hour" offset, and used as street lights. Such a panel (with
a much longer delay) featured prominently in a murder
investigation...

David A. Smith


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  #3  
Old 02-11-2008, 11:19 PM
SB
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Default frequency freezing in ice?

hummm....but there must be a point ..just before the phase change..that may
not have contained the taxi's horn...but ambient city noise?????

Steve


"PD" <[Only registered users see links. ]> wrote in message
news:[Only registered users see links. ]...
On Feb 10, 8:17 pm, "SB" <[Only registered users see links. ]> wrote:

The fundamental problem is that the propagation of the freezing is
itself limited by the speed of sound in the liquid. In order for a
waveform to be captured, the freeze time would have to be much, much
faster than the propagation of the wave form.

PD


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  #4  
Old 02-12-2008, 02:04 AM
N:dlzc D:aol T:com \(dlzc\)
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Default frequency freezing in ice?

Dear SB:

"SB" <[Only registered users see links. ]> wrote in message
news:[Only registered users see links. ]. ..

Sound is a pressure wave. Freezing involves degassing the
liquid, and forming a crystal structure. Crystal formation might
have carried some hint of the sound wave, but degassing would
have wiped that all out, since it is very much like a shock.

David A. Smith


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