The top-hatted “drinking bird,” once a fixture in science classrooms ... The physics behind it are relatively simple: The toy is made up of two glass bulbs, representing the head and body ...

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 ...

The drinking bird toy, also called a "dippy bird," has been a fixture of science classrooms for decades. The toy consists of two glass bulbs connected by a glass tube with a highly volatile liquid ...