Jeremy Souza
English 101
Professor Pappas
April 3rd, 2014
This toy can go by many names, the most popular being the “Insatiable Birdie”, however it canalso be named, drinking bird, mechanical water bird and the dipping bird. Dr. Miles V Sullivan was given
credit for the “insatiable birdie” in 1946 mostly because it was patented in the US, Sullivan did notactually create this toy. It was originally found in shanghai in 1922 by Albert Einstein. I did find that, it
was made in a toy shop in shanghai. However the actual creator of this isn’t mentioned on any credible source, however there are a few who can be given credit for this invention or toy. Takao Sakai from
Tohoku University, could have introduced this Chinese toy. The “Insatiable Birdie” is also mentioned in
Yakov Perelman’s Physics for Entertainment explaining its basic purpose.
This toy is can be aimed towards children or adults, but this is debatable because the body of the bird is made of glass and could be dangerous to children. It can be more for adults simply because it
shows a basic law of thermodynamics, and some for chemistry and physics. However children can alsoenjoy it because, it is entertaining to see how it’s moving on its own. It could also maybe persue them on
a path to science. The fluid inside can also stain everything very easily if it breaks, it can also be hazardous to your skin if it’s exposed. The early models were often filled with a highly flammable
substance. The fluid in later versions is nonflammable. Dichloromethane can irritate the skin on contactand the lungs if inhaled.”
At first I wasn’t sure how this toy worked, but I found out.“It moves on its own because, the differencebetween ambient temperature and wet bulb temperature is what drives its movement. It is not a perpetual
motion machine, it is a heat engine. At room temperature, a slight change of temperature difference causesthe bright red chemical to climb to his head. Suddenly top heavy, the insatiable birdie falls over. The felt head,
soaked in the water from the cup, cools the methylene chloride, and it drains back to the bottom. Thebird rights itself, and repeats its process all over again. It works due to evaporation, the expansion of gases
and equilibrium. It’s very interesting that something that looks so simple, actually applies of a lot of scientific laws,chemistry and physics especially.
This toy follows a few basic laws of chemistry and physics. It has to do with Chemistry because the liquid inside the bird is what allows its motion. Physics shows what basic laws this toy follows. One of
these laws is “The Second Law of Thermodynamics states (paraphrased) that energy can neither be created nor destroyed in a closed system.”
As stated by Ron Schenone on his blog, he states “The famous drinking bird actually demonstrates several scientific principlse with the assistance of an ordinary glass of water. The dichloromethane contained inside of it has a low boiling point that allows the Famous Drinking Bird to operate as a heat engine at room temperature. Other concepts demonstrated include: the Maxwell–Boltzmann distribution, the combined gas law, heat of vaporization, the ideal glass law, torque andcenter of mass, wet-bulb temperature, and capillary action of the included wicking felt. “
The liquid in its body is methylene chloride, which has a very low boiling point, and therefore evaporates quickly. It is important to note again that, this is not a perpetual motion machine. This has to
be refueled, or recharged, after the water is gone. Just as you replug your phone when the power is low,or refueling your car when its empty.
In conclusion, this simple toy has a lot more going on for it then it appears. This isn’t a widely popular toy anymore by any means, with it’s goofy top hat and feather on the body that have no real
purpose. It is still quite useful in showing some of the basic laws of thermodynamics. Along with other ones such as, chemistry and physics.
Works Cited
Schenone, Ron. “Famous Drinking Bird is for Adults Only.” Lockergnome.com.
Lockergnome, Inc. 13 February 2014. Web. 3 April 2014
Farabee, M.J. “Laws of Thermodynamics” www2.estrellamountain.edu
18 May 2010. 3 April 2014