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Extension of the Spectrum beyond the Schumann Region—I

Theodore Lyman
1916 Scientific American  
JlAVE recently published a brief statement of the re sult (lf my investigations on the extension of the SPI'C' trum.'
doi:10.1038/scientificamerican09021916-146supp fatcat:q2oijffclnapfl7tfveqfg6tgm