Thunder and Lightning

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The resultant outward-moving pulse is a shock wave, [9] similar in principle to the shock wave formed by an explosion , or at the front of a supersonic aircraft. Experimental studies of simulated lightning have produced results largely consistent with this model, though there is continued debate about the precise physical mechanisms of the process.

The shock wave in thunder is sufficient to cause property damage [5] and injury, such as internal contusion , to individuals nearby.

Understanding Lightning: Thunder

Vavrek et al. Peals are sounds changing in loudness and pitch. Rolls are irregular mixtures of loudness and pitches. Rumbles are less loud, last for longer up to more than 30 seconds , and of low pitch.

Inversion thunder results when lightning strikes between cloud and ground occur during a temperature inversion; the resulting thunder sound have significantly greater acoustic energy than from the same distance in a non-inversion condition. In an inversion, the air near the ground is cooler than the higher air; inversions often occur when warm moist air passes above a cold front. Within a temperature inversion, the sound energy is prevented from dispersing vertically as it would in a non-inversion and is thus concentrated in the near-ground layer.

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Cloud-ground lightning typically consist of two or more return strokes, from ground to cloud. Later return strokes have greater acoustic energy than the first. The most noticeable aspect of lightning and thunder is that the lightning is seen before the thunder is heard. This is a consequence of the much greater speed of light than of speed of sound.

A very bright flash of lightning and an almost simultaneous sharp "crack" of thunder, a thundercrack , therefore indicates that the lightning strike was very near. From Wikipedia, the free encyclopedia.


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For other uses, see Thunder disambiguation. A short sample of a crack of thunder during the sound of falling rain. Retrieved October 23, Oxford English Dictionary 2 ed.

16 interesting facts you probably don’t know about thunder and lightning

Oxford, England: Oxford University Press. The science of thunder. Thunder: Voice of the heavens. Lightning: Physics and Effects. Cambridge, England: Cambridge University Press. The lightning flash. London: Institution of Electrical Engineers.

Thunder and Lightning Facts | Earth | Nature | Eden Channel

Archived from the original on As the warm air rises it cools and condenses forming small droplets of water. Lightning is a huge electrical discharge that flows between clouds, from a cloud to air, or from a cloud to the ground. What happens when lightning strikes a beach? We take a look at ten interesting facts that you might not know about lightning.

When thunderstorms form in wintry conditions they can sometimes give rise to heavy downpours of snow which are often called 'thundersnow'. Thunder and lightning. Help us improve our website Take our short survey.

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