The Drinking Bird & How it Works

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The drinking bird is a heat engine that works on various laws of thermodynamics. It works due to evaporation, the expansion of gases and equilibrium.
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11 steps. Nice way to explain it. You forgot the part about the head bobbing action creates the chilling effect. The bobbing back and forth is important and everyone forgets this part. Air movement is essential. This is why when you get out of a swimming pool and it is windy, you chill faster - evaporative cooling.

chemopia
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Clever !   I would like to get one some day.

bluegold
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have not seen a bird like this for along time must be extinct in Scotland 

jimmywalker