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Question:

For equal thicknesses what is the better thermal conductor, Pyrex or copper?

If I have a square inch of copper plate 1/8 of an inch thickANDIf I have a square inch of Pyrex glass plate 1/8 of an inch thickAND I apply a flame to one side of each of for 30 seconds.then I turn off the flame to both of themWhich will be the cooler in 10 seconds?The Pyrex or the copper?

Answer:

copper is the better thermal conductor, so the pyrex will be cooler. thermal conductivity of copper is 401 W/mK thermal conductivity of glass is 1.05 W/mK .

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