Lightning. In-cloud and cloud-to-air lightning illuminating a thundercloud over an urban area. Lightning occurs when a large electrical charge builds up in a cloud,due to the rapid movement of water droplets and ice particles in the cloud's turbulent interior. In-cloud lightning occurs between the negatively charged base of a cloud and the positively charged upper levels. Cloud-to-air lightning occurs between the upper levels and the atmosphere. '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 high temperatures. Photographed in Finland | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / PEKKA PARVIAINEN |
Bildgröße: | 5359 px × 3539 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |