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What is thunder
Bashny.Net
Photo lightning that provoked scientists to explore its sound profile i>
Despite the widespread prevalence of lightning remains one of the mysteries of science. There are still some properties without explanation. For example, why do not they are short a few hundred meters? As they come in such a relatively weak electric fields? How is the collection of the charge clouds with volume of a few cubic kilometers? And this is not a complete list.
Therefore, the study of lightning - one of the areas of modern physics research. Scientists like no other subject to curiosity. Moreover, there is even International Center for Lightning Research and experiments . It is on the basis of this organization in Florida was conducted an interesting scientific experiment that will provide accurate acoustic signature of thunder from one particular lightning and make it unique "photos».
The experiment was conducted July 14, 2014 the specialists of the Southwest Research Institute (SWRI) in San Antonio. During the storm, they launched a rocket with a copper wire which was supposed to trigger a lightning strike in the right place. Ibid (95 m from the missile launch) pre-installed 15 special microphones at a distance of a meter from one another.
For the vertical profile of the waves used some techniques of digital signal processing and amplification method aimed collected data.
After processing the data, the researchers made visual illustrations that show the strength and direction of wave propagation. It is difficult to interpret them. But it is clear that the strength of the maximum sound directly at the earth's surface.
X
May 5 scientists published the results of their research .
Today, lightning strikes the earth 100 times per second. According to experts, the frequency will increase as the climate warms. So the study of the specific characteristics of this phenomenon has not only theoretical significance, but also practical meaning.
Source: geektimes.ru/post/250172/
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