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The Amateur Scientist
Walker, Jearl – Scientific American, 1978
Reviews various science activities investigating polarized light. (SL)
Descriptors: Astronomy, Educational Experiments, Glare, Light
The Amateur Scientist: Why Are the First Few Puffs the Hardest When You Blow Up a Balloon?
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)
The Amateur Scientist.
Walker, Jearl – Scientific American, 1978
Describes an experiment illustrating a lesson in wave interference using bright colors in a soap film. Illustrations provided. (MA)
Descriptors: Instructional Materials, Laboratory Experiments, Learning Activities, Physics
The Amateur Scientist.
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
The Amateur Scientist.
Walker, Jearl – Scientific American, 1978
Three classic visual toys are discussed and instructions are given for their construction. These are moire patterns, kaleidoscope, and stereoscope. (MP)
Descriptors: Learning Activities, Optics, Postsecondary Education, Science Education
The Amateur Scientist
Walker, Jearl – Scientific American, 1978
Examines the phenomenon of water drops that float on water at room temperature. Describes experiments that have been done to study this phenomenon. (MA)
Descriptors: Chemical Bonding, Chemistry, Molecular Structure, Resource Materials
Ideas for the Amateur Scientist.
Peer reviewed Peer reviewed
Walker, Jearl – Physics Teacher, 1978
Lists several ideas for experiments for the amateur scientist to try or design. The list covers a wide range of topics; sound, mechanics, thermodynamics, fluids, optics, and electrostatics. (GA)
Descriptors: Acoustics, Experiments, Mechanics (Physics), Optics
The Amateur Scientist.
Walker, Jearl – Scientific American, 1986
Describes experiments which focus on the perception of three dimensions. Discusses the cues about distance and depth and the role they have in perceptions of three dimensions. Evaluates the effect of color on the illusion on depth. (ML)
Descriptors: Cognitive Processes, Color, Cues, Depth Perception
The Amateur Scientist.
Walker, Jearl – Scientific American, 1979
Describes a simple seismograph which can be built quite easily and is sufficiently sensitive to record earthquake waves at home. (HM)
Descriptors: Earth Science, Measurement Equipment, Physics, Science Activities
The Amateur Scientist. A Backyard Version of a Stirling Engine Can Be Built with Common Materials.
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
The Amateur Scientist.
Walker, Jearl – Scientific American, 1986
Relates how Charles Martin Hall discovered the method of making pure aluminum metal in 1886. Retraces the events and steps that led to the process of aluminum purification. Includes diagrams of the apparatus used in the investigations. (ML)
Descriptors: Inventions, Metals, Physical Sciences, Problem Solving