Thursday 12 July 2012

Upward Lightning

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A "normal" lightning stroke propagates as negative stepped leaders fan out downwards, with one leader eventually connecting with a small positive leader from the ground. The negative charge is then dumped to ground along the short - the bright bolt of lightning. More bolts of electricity use the ionised channel as charge is dumped from further volumes of the cloud.  The lightning causes a charge imbalance, which induces positive leaders to propagate and fan upwards from tall objects - upward lightning. In this video by Tom Warner you can see the negative leaders creating a cloud to ground lightning strike on the left. This induces positive leader development from nearby towers, with consequent upward lightning. The second video is of spectacular lightning from the CN Tower, Toronto.

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Unrelated to this post, below is an example of
eclectic science esoterica 

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WARNING - Many subjects outlined within this site are extremely dangerous and are provided here for information only. Please don`t experiment with high voltages or chemicals unless you are fully conversant with safe laboratory practices. No liability will be accepted for death, injury or damage arising from experimentation using any information or materials supplied.