Retro drinking bird
The classic retro drinking bird, also known as "Insatiable birdies, dunking birds, water birds, dipping birds and ippy Chickens" are a toy heat engine that mimic the motions of a bird drinking from a water source.
The retro drinking bird is back!
The Science: This classic toy 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.
Measures: 19cm x 5cm x 5cm (approx)
Ideal gift for young and old
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