Lightning

Lightning is a naturally occurring electrostatic discharge during which two electrically charged regions in the atmosphere or ground temporarily equalize themselves, causing the instantaneous release of as much as one billion joules of energy. This discharge may produce a wide range of electromagnetic radiation, from very hot plasma created by the rapid movement of electrons to brilliant flashes of visible light in the form of black-body radiation. Lightning causes thunder, a sound from the shock wave which develops as gases in the vicinity of the discharge experience a sudden increase in pressure.

Formation

Lightning is caused by the build up of electrostatic charge in clouds. This can occur in the Earth's atmosphere when there are temperature and humidity changes in the air mass. The charge builds up and is released in a flash of light and heat, which we see as lightning.

Types of Lightning

There are several types of lightning, including cloud to ground lightning, cloud to cloud lightning, and intracloud lightning. Each type has unique characteristics and can occur under different atmospheric conditions.

Effects

Lightning can have a variety of effects on the environment and on human structures. It can cause forest fires, power outages, and damage to buildings and other structures. It can also cause injury or death to humans and animals.

Safety

There are several measures that can be taken to protect against lightning. These include staying indoors during a thunderstorm, avoiding tall structures, and not using electronic devices.

See also

• Thunderstorm
• Electrostatic discharge
• Atmospheric electricity

References

Lightning Resources
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