Equipment: A 'drinking bird' and a glass of water. Optional: a plexiglass box and a squeeze bottle containing alcohol. What it does: The bird bobs forward into the glass of water and recovers. It ...

The drinking bird is a heat engine driven by evaporating water absorbing heat from the surroundings. The bird bobs forward into the glass of water and recovers. It oscillates in the upright position ...

Full text is unavailable for this digitized archive article. Subscribers may view the full text of this article in its original form through TimesMachine. Advertisement ...

The action of the “Drinking Bird” is stopped when it is covered with a large bell jar. It resumes its motion when the bell jar is removed. The demonstration can be used to illustrate the expansion or ...