Text: "Nocturnal northern glows." Night sky brightness on the nights of June 30-July 1 and July 1-2, possibly associated with the Tunguska event. Possible natural scalar electromagnetic phenomenon. English Mechanic. 87, 1908. p. 581.

See Also: Scalar electromagnetics, natural scalar interferometry, anomalous light phenomena, electromagnetic anomalies, Tunguska incident.

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