Definitions for "Sferics"
Radio waves produced by lightning. This is the "crackling" that you hear on your AM radio during a thunderstorm.
Subject: The Earth Radio waves produced by lightning. A contraction of atmospherics.[ Pics List
1. (Also spelled spherics.) The study of atmospherics, especially from a meteorological point of view. This involves techniques of locating and tracking atmospherics sources and evaluating received signals ( waveform, frequency, etc.) in terms of source. 2. Same as atmospherics.