1. electromagnetic wavesPhysics terminology, See also 電波
Wikipedia definition
2. Electromagnetic radiationElectromagnetic radiation (EM radiation or EMR) is a form of energy emitted and absorbed by charged particles, which exhibits wave-like behavior as it travels through space. EMR has both electric and magnetic field components, which stand in a fixed ratio of intensity to each other, and which oscillate in phase perpendicular to each other and perpendicular to the direction of energy and wave propagation.
Read “Electromagnetic radiation” on English Wikipedia
Read “電磁波” on Japanese Wikipedia
Read “Electromagnetic radiation” on DBpedia


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