Heat Transfer quizzes
How heat moves between materials, and why metal feels colder than wood even at the same temperature.
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From Heat Transfer: Why Metal Feels Colder Than Wood
A vacuum flask has a vacuum between two silvered walls. Which heat transfer modes does the vacuum itself block?
- Conduction and convection
- Only thermal radiation
- All three modes at once
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Answer: Conduction and convection
With no gas between the walls nothing can conduct or circulate; the silvering is what cuts radiation.
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