UNUSUAL LIGHTNING

Lightning: an unusual etiology of gastrointestinal perforation.

Insights into the ground attachment process of natural lightning gained from an unusual triggered-lightning stroke

[1] We present measured electric and magnetic field and current derivatives from an unusual triggered-lightning stroke that was initiated by a dart-stepped leader and that involved an upward connecting leader. The initial rising portion of the current (integrated dI/dt) waveform is composed of a ‘‘slow front’’ rising to 20 kA in 2.2 ms, followed by a ‘‘fast transition’’ from 20 to 27 kA in 0.2 ...

Lightning Discharge and Fundamentals of Lightning Protection

A review of lightning protection concepts introduced by Benjamin Franklin (18th century) and James Clerk Maxwell (19th century) is given. Modern approaches to lightning protection of various structures and systems are discussed. In particular, the widely used electrogeometrical model (one version of which is the Rolling Sphere Method) and the topological shielding are presented. Bonding require...

An unusual case of lightning injury: a melted silver necklace causing a full thickness linear burn.

An unusual case of lightning injury is shown. Flash-over current caused the fusion of a silver necklace producing a linear full thickness burn in the neck and chest with the silver welded throughout the wound.

Lightning Protection

Lightning causes deaths, injuries, damages, and significant costs and losses around the world. The global lightning flash rate is in the range of 40 to 100 lightning flashes per second, of which about 30 % are cloud-to-ground flashes. The development of theoretical and experimental researches is crucial for a better understanding of the physical phenomenon and for the characterization of lightn...