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Other field sources

Further typical exposure sources generating fields in the intermediate frequency range are
Left: energy saving bulb, center: electromagnetic article surveillance tag, right: gas metal arc welding (MIG)
left image: Armin Kübelbeck, license: CC BY-SA 3.0, central image: Anton~commonswiki, license: CC BY-SA 3.0, right image: William M. Plate Jr., license: public domain, all via Wikimedia Commons