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Humphrey, T. E.; Calisa, Vaishnavi – Physics Teacher, 2014
In 1879, in the midst of the debate between English and continental scientists about the nature of cathode rays, William Crookes conducted an experiment in which a small mill or "paddle wheel" was pushed along tracks inside a cathode ray tube (CRT) (similar to that shown in Fig. 1) when connected to a high-voltage induction coil. Crookes…
Descriptors: Demonstrations (Educational), Motion, Scientific Concepts, Mechanics (Physics)
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Dittmann, H.; Schneider, W. B. – Physics Teacher, 1992
Describes a project that uses a computer and a dot matrix printer to simulate the holographic recording process of simple object structures. The process' four steps are (1) superposition of waves; (2) representing the superposition of a plane reference wave on the monitor screen; (3) photographic reduction of the images; and (4) reconstruction of…
Descriptors: Computer Assisted Instruction, Computer Simulation, Geometric Constructions, High Schools