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Making Waves with an Electric Toothbrush
Peer reviewed Peer reviewed
Kruglak, Haym – Science Teacher, 1975
Suggests the use of an electric toothbrush in demonstrating many wave motion phenomena. (LS)
Descriptors: Audiovisual Aids, Demonstrations (Educational), Educational Media, Instruction
Apparatus for Teaching Physics: A Very Short, Portable Foucault Pendulum.
Peer reviewed Peer reviewed
Kruglak, Haym – Physics Teacher, 1983
Describes the construction of a small (portable), inexpensive, and easy to build Foucault pendulum. Includes photographs of the apparatus, a schematic of the electrical circuit used, and discussion of the amount of accuracy to be expected during classroom investigation. (JM)
Descriptors: College Science, Demonstrations (Educational), High Schools, Higher Education
Brownian Motion--a Laboratory Experiment.
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Kruglak, Haym – Physics Education, 1988
Introduces an experiment involving the observation of Brownian motion for college students. Describes the apparatus, experimental procedures, data analysis and results, and error analysis. Lists experimental techniques used in the experiment. Provides a circuit diagram, typical data, and graphs. (YP)
Descriptors: College Science, Demonstrations (Educational), Higher Education, Laboratory Equipment
Red Sunset and Blue Sky With a Shoe Box
Peer reviewed Peer reviewed
Kruglak, Haym – Science Teacher, 1974
Descriptors: Demonstrations (Educational), Laboratory Procedures, Light, Physical Sciences
"Canned" Physics.
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Kruglak, Haym – Physics Teacher, 1992
Outlines 39 physics demonstrations that utilize simple objects such as coffee and soda cans to illustrate scientific concepts. (12 references) (MDH)
Descriptors: Demonstrations (Educational), Density (Matter), Electricity, Energy