Descriptor
| Laboratory Experiments | 3 |
| Laboratory Procedures | 3 |
| Physics | 3 |
| Pressure (Physics) | 2 |
| Scientific Concepts | 2 |
| Engines | 1 |
| Matter | 1 |
| Optics | 1 |
| Plastics | 1 |
| Polymers | 1 |
| Power Technology | 1 |
| More ▼ | |
Source
| Scientific American | 3 |
Author
| Walker, Jearl | 3 |
Publication Type
| Journal Articles | 3 |
| Reports - Descriptive | 3 |
Education Level
Audience
| Practitioners | 3 |
| Teachers | 3 |
| Researchers | 1 |
Location
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Walker, Jearl – Scientific American, 1989
Discusses the change in pressure as a balloon expands. Describes the pressure change in a spherical soap bubble and a rubber membrane on the tube. Provides demonstrations when two balloons are connected by a tube. Lists five further reading materials. (YP)
Descriptors: Laboratory Experiments, Laboratory Procedures, Physics, Pressure (Physics)
Walker, Jearl – Scientific American, 1990
Describes the necking of polymer sheets that occurs when they are stretched. Discusses the effect and the mechanisms of necking. Lists four references. (YP)
Descriptors: Laboratory Experiments, Laboratory Procedures, Matter, Optics
Walker, Jearl – Scientific American, 1990
Discusses advantages of the Stirling engine. Describes the details of constructing one from common materials, and its use for studying thermodynamics. (YP)
Descriptors: Engines, Laboratory Experiments, Laboratory Procedures, Physics
