Electronic video footage has captured the moment just before lightning strikes, when thin electric tires reach down from the sky and up from the ground, so that they hit with an penetrating flame.
Using a high-speed camera, researchers captured lightning images while hitting a 1,066-foot (325-meter) meteorology tower in Beijing. Two continuous frames, each lasting 2.63 microseconds, show the moment when downward and upward fingers are suddenly rubbed, releasing a large amount. electricity transmission and a clear flame of aotrom.
The images shed light on the so-called positive phase, immediately when the electronic fingers begin to come close together but have not yet made contact. This is one of the “worst processes to understand in electronic physics, “but it is crucial to understand where the lightning will eventually go on strike, the authors wrote in a report published on February 1 in the journal Geophysical Research Letters.
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“The target of the lightning strike is not initially determined when it starts from the cloud,” said study co-author Rubin Jiang, an atmospheric physicist at the Chinese Academy of Sciences laboratory for Central Atmosphere and Global Environmental Observation, said in a statement. The breaking point is “the process that ultimately determines the object struck by the lightning.”
Because the rate of fracture is happening so fast, scientists have struggled to see what will happen in these critical times. The new high-speed photograph gives a clearer picture of the unattainable event.
Lighting begins when a collection of negative grains accumulates in a cloud, causing a positive joint charge to build up in the ground below, according to the statement. Low-flow channels electricity, called “leaders,” descending from the cloud, parting with many branches. As these branches are close to the ground, they attract well-charged leaders who jump from objects below; this leads to a progressive stage, when the heads of prosecutors opposite come close.
There are two theories about what happens when these leaders meet. One theory holds that the two conductors emit several lines of electricity, called “streamers.” (Think of conductors as long pieces of thread, with currents as the frightening boundaries of that thread.) According to the first theory, several streams from the two conductors intersect to form one channel of hot plasma. lorg. An electric current can then flow on this channel, causing the lightning current.
However, the new study supports a different theory. In the film, instead of many climbers coming together to form a plasma channel, only one negative climber and one positive climber make a connection.
In the first video the video shows one director going down and going towards one leader going up. When the conductors come within 75 feet (23 m) of each other, they form a “common streamer zone,” and a thin, clear strand of electricity appears between them, connecting their tips. Thin thread indicates that only two streams came together to form it, the authors wrote. In the following frames, this shiny fiber quickly enters a thick plasma channel that completely joins the conductors, resulting in a light flame.
After the two lucky streams connected, the remaining streams did not disappear. That said, the study’s authors need to watch more lightning strikes to confirm that the phenomenon is constantly expanding like this, according to the report.
First published on Living Science.