Sentences with phrase «frequency electromagnetic emissions»
The satellite data is being combined with that collected by the National Lightning Detection Network and from a network of sensors that measure low - frequency electromagnetic emissions, or «sferics,» and changes in the direction of the electric field.
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Due to different emission processes coherent radiation in the radio frequency range is emitted by the air shower which primarily originates from its well - understood electromagnetic part.
Light is defined conventionally by physicists as electromagnetic emissions of any frequency and not merely the visual.
Extremely low - frequency electromagnetic radiation is the only potentially important electromagnetic emission from wind turbines.