Lightning. In-cloud lightning illuminating a thundercloud over an urban area. Lightning occurs when a large electrical charge builds up in a cloud. This is probably due to the rapid movement of water droplets and ice particles in the turbulent interior of the cloud. In-cloud lightning occurs between the negatively charged base of a cloud and the positively charged upper levels. 'Leader electrons' move between the charged areas and,when contact is made,there is a huge backflow of energy along the path of the electrons. This produces a bright flash of light and temperatures of up to 30,000 degrees Celsius. Photographed in Finland | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / PEKKA PARVIAINEN |
Bildgröße: | 5401 px × 3501 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |