GRAVE 发表于 2025-3-26 21:42:05
Book 2003and magnetic field. Electromagnetic fields appear in a vast set of frequencies (spectra) that are divided in frequency zones, according to the manner they are produced or used. Areas greater than 300 gigacycles (GHz), which include the solar spectrum, as well as x and gamma rays, have been studied s恫吓 发表于 2025-3-27 04:29:30
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