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What causes thunder and lightning?
What causes thunder and lightning?
Flash of lightning
He found Eireann’s status on his website: “Lightning is a sudden powerful flow of electricity (an electrostatic discharge) accompanied by thunder that occurs during a thunderstorm. The discharge will travel between electrically charged regions within a storm cloud, or between a cloud and a cloud, or between a cloud and the surface of a planet.
“The charged regions within the atmosphere are temporarily evened out by lightning, commonly known as a hit if you hit an object on the ground.”
Met Eireann says: “Because the electrostatic discharge from terrestrial rays overheats the air to plasma temperatures along the discharge channel in a short duration, kinetic theory dictates that gas molecules experience a rapid increase in pressure and therefore they expand out of the beam creating an audible shock wave like thunder.
“Since sound waves do not propagate from a single point source but along the path of the beam, different distances from the source of the sound from the observer can cause a rocking or rumbling effect.
“Light travels at about 300,000,000 m / s. Sound travels through the air at about 340 m / s. A lightning strike before its thunder in five seconds would be a mile (1.6 km) (5 × 340 m) away. Lightning observed at a very close distance will be accompanied by sudden thunder and possibly accompanied by the smell of ozone (O3). “
Lightning strikes
The national forecaster says: “Objects struck by lightning experience great magnitude heat and magnetic forces.
“The heat created by lightning currents traveling through a tree can vaporize its sap, causing an explosion of steam to burst the trunk. Although approximately 90 percent of people struck by lightning survive, the injury can be serious. Buildings or tall structures struck by lightning can be damaged as the lightning strikes unwanted paths to the ground. The use of lightning rods allows the safe conduction of lightning to the ground ”.
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