EXTREMELY WEAK MAGNETISM. “Underground Extremely Low Frequency antenna generating 0.1–0.5 µT between 72 and 80 Hz can disrupt bird orientation, which supports an account of effects of geomagnetic disturbances on orientation in birds.”
http://rsif.royalsocietypublishing.org/content/10/81/20121046.short
linkedin post 2022-06-29 05:12:48
Nigel Fleming
September 21, 2022