Lightning, high speed

Référence de la vidéo 12080490
Ultra-high-speed footage of a lightning strike. This clip shows the key features of a classic multi-stroke negative lightning strike. Firstly, stepped leaders descend from the negatively-charged cloud base, leaving a network of glowing paths. The concentration of charge attracts opposite, positive, charges from the ground, causing the formation of an upward positive leader from the top of the tower. This contacts one of the downward leaders, forming an ionised channel through which the main discharge can occur. This is what is seen as the lightning bolt to the naked eye. The initial bright return stroke is followed by five successive strokes down the same channel, some of which exhibit both continuing currents and m-components. Filmed at more than 7200 frames per second in South Dakota, USA, in summer.
Licence : Libre de droits
Crédit : Science Photo Library / Warner, Tom / Weathervideohd.tv
Model Release : Non requis
Property release : Non requis
Durée : 01:44 Minutes
Aspect ratio : 4/3
Restrictions : -

Prix pour cette vidéo À partir de 95 €

Format Web À partir de 95 €
Taille de la HD À partir de 349 €

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