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Peterson, I. – Science News, 1989
Describes the theory and application of an atomic fountain which pushes the atoms by laser pulses. Discusses the applications in measuring atomic properties and in building an atomic clock. (YP)
Descriptors: Atomic Structure, Higher Education, Lasers, Measurement
Peer reviewedRoth, Wolff-Michael – Journal of Science Teacher Education, 1992
Compared the effects of participation in six extra credit activities for teaching the concept of matter on female preservice elementary school teachers (n=9) to a control group (n=8). Pre- and posttests to assess changes in the students' understanding of phenomena associated with matter indicated significant changes in experimental students'…
Descriptors: Atomic Structure, Chemical Reactions, Chemistry, Concept Formation
