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Which surface is best at insulating boiling water in a flask?
Member rating: No Rating | Words: | Submitted: Wed Apr 21 2004
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Which surface is best at insulating boiling water in a flask? Aim I'm investigating which surface (matt black or silvery) is best at insulating boiling water. I will investigate this by covering two equally sized conical flasks in different materials; one in matt black and one in silvery. After that I will fill each of the flasks with an equal amount of boiling water. At regular intervals of 1 minute I will measure the drop in water temperature in each flask. Prediction I predict that the flask with the silvery surface will take longer to cool and overall there will be a smaller drop in temperature because the silver surface will reflect nearly all heat radiation back into the flask keeping the water warm whilst a dull black surface is a very good emitter of heat radiation so a lot of heat will be lost to the surroundings. Method Apparatus Conical flasks -One silver foil -One matt black...
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