Posts Tagged ‘lightningbolt’
The above lightning bolt starts with many simultaneously creating ionized channels branching out from an negatively charged pool of electrons and ions that has somehow been created by drafts and collisions in a rain cloud. About 0.015 seconds after appearing — which takes about 3 seconds in the above time-lapse video — one of the meandering charge leaders makes contact with a suddenly appearing positive spike moving up from the ground and an ionized channel of air is created that instantly acts like a wire. Immediately afterwards, this hot channel pulses with a tremendous amount of charges shooting back and forth between the cloud and the ground, creating a dangerous explosion that is later heard as thunder. Much remains unknown about lightning, however, including details of the mechanism that separates charges.
It’s amazing how much action goes on in just a blink of the eye.
Video credits: Footage by Tom A. Warner/ZTResearch/WeatherVideoHD.TV and used with permission
William Phuoc and a few other storm chasers were shooting a thunderstorm in the Australian grasslands when a huge bolt of lightning struck the ground about 200 meters away. Luckily, they captured the strike on video and Phuoc’s Canon EOS-1D Mark IV (using a 14mm lens and lightning trigger) was able to capture an amazing photograph of the strike.