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It is a conductor. While air has a thermal conductivity of 0.025 W/M-K, water has 0.6 W/M-K.

Air, with this thermal conductivity, is considered one of the best isolators - practically, every isolation material (for construction purposes) is made up out of little cells full with air, so most of it's volume is actually air.

Water is about 24 times more conductive.

Which is still pretty bad compared to the thermal conductivity of aluminum, which is 237 W/M-K.

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15y ago

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