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Peer reviewedPoole, R. T. – Physics Education, 1983
Examines the physical basis for colors of noble metals (copper, silver, gold) developed from energy conservation/quantum mechanical view of free electron photoabsorption. Describes production of absorption edges produced by change in density of occupied valence electron states in the d-band, which allows stronger absorption in the visible photon…
Descriptors: Atomic Structure, College Science, Color, Energy
Peer reviewedGilbert, George L. – Journal of Chemical Education, 1982
Two demonstrations are described: (1) a sunset effect using a gooseneck lamp and 20 sheets of paper and (2) the preparation and determination of structural features of dimethyl sulfoxide (DMSO) by infrared spectroscopy. (SK)
Descriptors: Chemical Reactions, Chemistry, College Science, Demonstrations (Educational)
Peer reviewedDigilov, M. – Quantum, 1991
Discusses 5 innovative experiments conducted by Rutherford in early 1900s utilizing the 30 milligrams of radium salt he personally carried from Europe to Canada in 1903. Traces his work with alpha particles from his original results which determined their nature, charge, and mass, to his technique of backscattering which helped to advance…
Descriptors: Atomic Structure, Atomic Theory, Radiation, Radioisotopes
