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Which of these materials is the best conductor of heat?
See here what other people have answered:
- Coal
- Air
- Brass
- Porcelain
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Interesting fact:
Archimedes is said to have used mirrors to focus sunlight on invading ships and burn them down. This story is most certainly untrue, as mirrors that would be able to achieve such a feat would need to be extremely large. Still, the myth demonstrates the Ancient Greeks deep understanding of physics.