Novelty Dippy Drinking Bird
The novelty dippy drinking bird is a classic toy. This is a fantastic item.
The drinking bird is a heat engine that exploits a temperature differential to convert heat energy to pressure differential within the device and perform mechanical work.
Like all heat engines， the drinking bird works through a thermodynamic cycle.
The novelty dippy drinking bird only needs water to run. Simply moisten the bird's head with water， place it next to a full glass of water and watch as the bird periodically dunks its head into the glass for a drink. It continues for hours.
Children are fascinated by the bobbing bird， and the educational possibilities are great!
Refer here for video:
Colours available: Red， Blue， Green
