Comments by "Phil Dobson" (@phildobson8705) on "Electromagnetism 101 | National Geographic" video.

  1. 'Radio waves' are oscillations (high frequency vibrations) in magnetic fields. A verticaly alternaing electricity in a transmitter antenna (+-+-+-) causes horizontal oscillations in magnetic fields. At the receiver antenna horizontal oscillations in the magnetic field causes vertical alternating current (+-+-+-) Visualise a transformer? It works just like a transformer - oscillating magnetic fields!
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