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Q & A: Preventing ice cube melting

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Most recent answer: 05/16/2013
Q:
what is the best insulator to keep an ice cube from melting in a container?
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- william (age 8)
new canaan,ct
A:
Hello William,
Ordinary styrofoam is pretty good.  It\'s an excellent insulator and inexpensive too.
Probably your best bet is a Dewar flask, commonly called a Thermos bottle.  This device was invented by a Scottish physicist and chemist Sir James Dewar  in 1892. It consists of two bottles, one inside the other, with a vacuum between them.  The vacuum prevents heat conduction through air.  In addition the sides of the bottles are silvered to reduce heat loss due to radiation.

LeeH
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(published on 05/16/2013)

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