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The whole process of discharge might
be over after one cycle but usually it is not. All charge in the cloud is
probably not neutralised by one stroke. After a short while (50-100 ms)
charge in cloud regroups and new discharge could appear. It follows the
same mechanism as the first one except leader follows the ionised channel
made in previous discharge. Usually there are several discharges (4-5).
The whole phenomenon usually lasts 0.2-1s. That is we don't see the separate
discharges but only one flash. Sometimes it is possible to see a kind of
flickering in lightning flash and it could be explained with several discharges
in one lightning strike. |
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