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Cathode Ray Tube (Physics of Technology Series)

A module on electric fields and forces. Provides an introduction to electrostatics, including charge, Coulomb’s law, electric field, current, and electric forces. There are no prerequisites, and the module is suitable for use as an "entry" module. Part of the Physics of Technology program, a 27-module introduction to physics at a pre-calculus level. The American Institute of Physics coordinated this program in the 1970s, with modules created by Florissant Valley Community College, Oak Ridge Associated Universities, the State University of New York at Binghamton, and TERC. From the Instructor’s Manual : This module introduces the student to the components of the CRT and their functions. The emphasis is on physical principles. Additional topics on which the instructor can add material are thermionic emission; space charge; the physical processes by which the electron kinetic energy is converted to radiation in the phosphor of the screen; secondary emission and its role in preventing the build-up of negative charge on the screen; the nature of aquadag (graphite conductive coating) and its role in preventing build-up of electrons on the screen, keeping stray light from entering the tub

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