Frequency Band Designations
AUG 01, 1949
DOI: 10.1063/1.3066614
A subcommittee of the American Institute of Electrical Engineers has prepared a chart covering a frequency range from eleven and a half years, corresponding to the sun spot cycle, to less than one micromicron (in electromagnetic wave lengths), corresponding to the frequency of secondary cosmic rays.
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© 1949 American Institute of Physics
