Drinking Lucky Bird Dippy Glass Perpetual Motion Novelty Bobbing Einstein Toy

Drinking Lucky Bird Includes one novelty drinking lucky bird toy Help him take the first sip by dunking his head into a glass of cold water; keep a full glass in front of the bird and he'll take sip after sip on his own. This thermodynamic bird works as a heat engine based on basic principles of chemistry and physics. The Drinking Bird may seem like a strange mystery of science, but he's really intriguing to watch. Measures about 7" tall Great for a science lesson on evaporation and condensation Perpetual motion-Watch as the Drinking Birds drinks from a glass New and Boxed Great for Science Demonstrations Drinking Bird. A rather dumb looking 6" bird with a felt covered head and has plastic feet. Worse, he cannot get his fill of water. You buy the drinks. Fluid inside condenses from the evaporative cooling of the water off the bird's beak, making it top heavy and dunking it back into the water. The condensate rejoins the liquid pool in the bird's bulb, and he tips up ag.