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fromWIRED
1 day ago

Physicists Create a Thermometer for Measuring 'Quantumness'

Take this hot cup of coffee and this cold jug of milk, the Brazilian physicist said as we sat in a café in Copenhagen. Bring them into contact and, sure enough, heat will flow from the hot object to the cold one, just as the German scientist Rudolf Clausius first stated formally in 1850. However, in some cases, de Oliveira explained, physicists have learned that the laws of quantum mechanics can drive heat flow the opposite way: from cold to hot.
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fromWIRED
1 month ago

5 More Physics Equations Everyone Should Know

Entropy quantifies the number of accessible microstates and, in an isolated system, tends to increase, driving systems toward loss of organized structure.
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