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ERIC Number: ED071905
Record Type: Non-Journal
Publication Date: 1968
Pages: 145
Abstractor: N/A
Reference Count: N/A
ISBN: N/A
ISSN: N/A
Project Physics Text 5, Models of the Atom.
Harvard Univ., Cambridge, MA. Harvard Project Physics.
Basic atomic theories are presented in this fifth unit of the Project Physics text for use by senior high students. Chemical basis of atomic models in the early years of the 18th Century is discussed n connection with Dalton's theory, atomic properties, and periodic tables. The discovery of electrons is described by using cathode rays, Millikan's experiment, photoelectric effects, x-rays, and Einstein's photon model. Analyses of nucleus are made with a background of gas spectra, Rutherford's model, nuclear charges and sizes, Bohr theory, Franck-Hertz experiment, periodicity of elements, and atomic theory in the early 1920's. Latest ideas about atomic theory are given in terms of results of relativity concepts, particle-like behavior in radiation, wave-like behavior of matter, uncertainty principle, probability interpretation, and physical ideas of quantum mechanics. Historical developments are stressed in the overall explanation. Problems with answers are provided in two categories: study guide and end of section questions. Also included are related illustrations for explanation use and a chart of renowned people's life spans from 1800 to 1950. The work of Harvard Project Physics has been financially supported by: the Carnegie Corporation of New York, the Ford Foundation, the National Science Foundation, the Alfred P. Sloan Foundation, the United States Office of Education, and Harvard University. (CC)
Publication Type: N/A
Education Level: N/A
Audience: N/A
Language: N/A
Sponsor: Office of Education (DHEW), Washington, DC. Bureau of Research.
Authoring Institution: Harvard Univ., Cambridge, MA. Harvard Project Physics.