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Pages 37-38

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From page 37...
... The upward branching in this photograph was produced by a leader that propagated upward from the wire, and the bright, straight section of channel near the ground shows the path of the wire just before it exploded as a result of the lightning current. Triggered lightning is now being used to investigate the luminous development of lightning channels, the characteristics of lightning currents, the velocities of return strokes, the relation between currents and fields, the mechanisms of lightning damage, the performance of lightning protection systems, and many other problems (Fieux et al., 1978; Hubert and Fieux, 1981; Horii,
From page 38...
... Privat d'Allier Research Group, 1982; Hubert et al., 1984~. Among the more important results to date have been a direct experimental verification of the existence of submicrosecond fields and currents during return strokes and the general validity of Eq.


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