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| Scientific American | 4 |
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| Walker, Jearl | 4 |
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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
Walker, Jearl – Scientific American, 1978
Reviews various science activities investigating polarized light. (SL)
Descriptors: Astronomy, Educational Experiments, Glare, Light
Walker, Jearl – Scientific American, 1979
A discussion of Edwin Land's experiments with color images from black-and-white photographs. Information is presented for duplication of these experiments by the amateur photographer. (BB)
Descriptors: Color, Eyes, Photography, Physics
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
