By considering the difference between the wet and dry bulb temperatures, it is possible to develop a mathematical expression to calculate the maximum work that can be produced from a given amount of water "drunk". Such analysis is based on the definition of the Carnot heat engine efficiency and the psychrometric concepts. [13] History [ edit ]

The space inside the bird contains a fluid, usually colored for visibility. (This dye might fade when exposed to light, with the rate depending on the dye/color). [5] Bernardi, Enrico (1873). "Modo di utilizzare il calorico dell' ambiente per produrre un piccolo lavoro"[Way to use ambient heat to produce a little work]. Atti del Reale Istituto Veneto di Scienze, Lettere ed Arti (Transactions of the Royal Venetian Institute of Science, Letters, and Arts). 4th series (in Italian). 2: 1379–1389.

Flórez-Orrego, Daniel. "Three hand-solved thermodynamics exercises for fun". Flórez-Orrego, Daniel. Polytechnic School, University of Sao Paulo. Realistic Animal Figures - Our Animal figurines was hand painted with high realistically detailed appearance, cute face and childish eyes. Their uniquely molded textures and richly painted details make the animals vivid. Güémez, J.; Valiente, R.; Fiolhais, C.; Fiolhais, M. (December 2003). "Experiments with the drinking bird". American Journal of Physics. 71 (12): 1257–1263. Bibcode: 2003AmJPh..71.1257G. doi: 10.1119/1.1603272. hdl: 10316/12328 . Retrieved 30 January 2022.

Safety Material - Animal Figurines made of durable Eco-friendly plastic material, BPA Free, Phthalates Free and Non-Toxic. Conforms to Releated Toy Safety Standards. Safety always comes first. 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. Arthur M. Hillery got a US patent in 1945. Arthur M. Hillery suggested the use of acetone as working fluid. [21] If a glass of water is placed so that the beak dips into it on its descent, the bird will continue to absorb water and the cycle will continue as long as there is enough water in the glass to keep the head wet. However, the bird will continue to dip even without a source of water, as long as the head is wet, or as long as a temperature differential is maintained between the head and body. This differential can be generated without evaporative cooling in the head; for instance, a heat source directed at the bottom bulb will create a pressure differential between top and bottom that will drive the engine. The ultimate source of energy is the temperature gradient between the toy's head and base; the toy is not a perpetual motion machine.Minto wheel - a heat engine consisting of a set of sealed chambers with volatile fluid inside just as in the drinking bird Thermodynamics - the branch of physics concerned with heat and temperature and their relation to energy and work Wet-bulb temperature: The temperature difference between the head and body depends on the relative humidity of the air. a b c Perelman, Yakov (1972) [1936]. Physics for Entertainment. Vol.2. pp.175–178. ISBN 978-1401309213.

The liquid in the bottom bulb is heated by ambient air, which is at a temperature slightly higher than the temperature of the bird's head.

Reading Australia: 'The Floating World' by John Romeril". www.australianbookreview.com.au. Archived from the original on 18 June 2015 . Retrieved 22 May 2022. Among video games, the drinking bird appeared as the "dunkin' dragon" in the Sierra game Quest for Glory (1989), in the Gremlin Interactive game Normality (1996), and as a "water bird" furniture item in the Animal Crossing games (2001). Porygon2, a Pokémon introduced in Generation II ( Pokémon Gold and Silver), resembles a drinking bird, and in 3D Pokémon games, it moves its head in a "dipping" motion. More recently, in the game Quantum Conundrum (2012), one of the main gameplay mechanics is a drinking bird that is used as a timer to press buttons. In the 2014 Creative Assembly video game Alien: Isolation, drinking birds are frequently seen on desks across the game's main setting, Sevastopol Station.