Posts

Showing posts with the label Science

5 billion joules in a flash..

Image
By Lemuel Irabor Let's explore the possibility of utilizing the gargantuan amount of electric power in lightning as a source of cheap renewable energy. B eing known to appear before a thunderclap (thus earning the moniker,’thunderbolt’);lightning has evolved from being known as a mystical wonder to being discovered to be a simple naturally-occurring electrical phenomenon. Due to the great difference between the relative speeds of sound and light in air, the thunderclap is usually heard about 7 seconds after the flash of lightning with the flash itself normally lasting microseconds.The flash appears as a ‘long crack’ in clear skies and, in cloudy atmosphere, is not readily seen from the earth although the associated illumination is still noticed. Lightning flashes usually appear white.Depending on local atmospheric conditions; flashes of colours such as yellow and blue-violet have also been reported. An average of 100 occurrences of lightning are recorded world...