
What we see is the return stroke, after the ionisation channel has propagated downwards.
( , Wed 25 Jul 2012, 9:53, Reply)

Plus the subsequent emission of photons, I always have found that quite an amazing thing.
( , Wed 25 Jul 2012, 10:12, Reply)

so why is some lightning all fast like, and that one was all like slow and stuff?
( , Wed 25 Jul 2012, 14:50, Reply)