Understanding Lightning: Return Stroke - National Weather Service
网页The return stroke is the very bright visible flash that we see as lightning, caused by the rapid discharge of electricity. Once the step leader makes contact with a streamer, the negative charge that has accumulated along the leader channel flows rapidly to ground.
Lightning Stroke - Circuit Globe
网页Lightning stroke is the direct discharge of an electrical charge between the atmosphere and the object of earth. It is a sudden flow of electric charge between the electrical charge area of a cloud also called intra-cloud and another cloud called (CC lightning) or between the charged cloud and the ground (CG lightning).
Lightning - Wikipedia
网页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. Lightning occurs commonly during thunderstorms as well as other types of energetic weather systems, but volcanic lightning can also occur during volcanic eruptions.
Lightning strike - Wikipedia
网页A lightning strike or lightning bolt is a lightning event in which the electric discharge takes place between the atmosphere and the ground. Most originate in a cumulonimbus cloud and terminate on the ground, called cloud-to-ground (CG) lightning.
Lightning | Voltage, Causes, & Facts | Britannica
网页2024年9月11日 · Lightning strikes on people, though comparatively rare, can cause conditions ranging from amnesia to cardiac arrest. Lightning can also cause the surrounding air to heat up to 27,700 degrees Celsius (almost 50,000 degrees Fahrenheit), often setting nearby objects on fire. Lightning causes thousands of …
Severe Weather 101: Lightning FAQ - NOAA National Severe …
网页It is the return stroke that produces the visible flash, but it all happens so fast - in a few thousandths of a second - so the human eye doesn't see the actual formation of the stroke. Natural lightning can also trigger upward discharges from …
Severe Weather 101: Lightning Types - NOAA National Severe …
网页There are two ways that flashes can strike ground: naturally downward (those that occur because of normal electrification in the environment), and artificially initiated or triggered upward. Artificially initiated lightning is associated with things like very tall structures, rockets and towers.
Lightning flashes and strokes - HyperPhysics
网页Lightning flashes and strokes. The term lightning flash is used to describe the entire discharge, which takes on the order of 0.2 seconds. But a flash is usually made up of several shorter discharges which last less than a millisecond and which repeat rapidly enough that the eye cannot resolve the multiple events.
Understanding Lightning - National Weather Service
网页Lightning is one of the top three storm-related killers in the United States. It is also one of the least understood weather phenomena. Learn more about lightning science at the links below. You can go through the site sequentially for a complete intro to lightning science or pick the topics of interest to you. Lightning Science Overview
How Lightning Works | NOVA - PBS
网页2005年10月1日 · The fast succession of leaders and bright return strokes is what causes a lightning flash to flicker.
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