Albert Einstein and his student Leo Szilard invented and patented a version of this thing that had no moving solid parts, and therefore was unlikely to ever break or leak. The more common type of this
Albert Einstein and his student Leo Szilard invented and patented a version of this thing that had no moving solid parts, and therefore was unlikely to ever break or leak. The more common type of this thing does have a moving compressor to pressurize a vapor into liquid and force it through coils on the inside, but leaks of the fluid became less dangerous with the 1930 invention of freon. For 10 points--what device uses a Carnot cycle to pump heat from inside a container?