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originally posted by: tinner07
Seems like we had one of those things back in probably the 70's. I think it was yellow. Not sure what it did though... just pivoted up and down near a bowl of water or something .
Does it take the water in and then put it back?
The drinking bird is a heat engine that exploits a temperature difference to convert heat energy to a pressure difference within the device, and performs mechanical work. Like all heat engines, the drinking bird works through a thermodynamic cycle. The initial state of the system is a bird with a wet head oriented vertically.