Amplitude and frequency modulations
Feature information transmission in the form of electromagnetic waves. Carrying out the method of amplitude modulation of the sound in the mid-1870s. Exposure frequency inflexion effects of physical barriers. The primary analysis of popularity FM-radio.
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Comparison for new prospects for the use of electromagnetic phenomena in earthquake forecasting, the ultra-low frequency range was selected. Research of information about Ulf networks and researchers who had critical views on electromagnetic phenomena.
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