A lighting strike is
an electric discharge between the atmosphere and an earth bound object. Lighting
is one of the major destructive forces of nature, it is quite surprising that
known very little about this powerful phenomenon.
A lighting researcher named Robert Moore from the University
of Florida said “the basic physics of lighting such as lighting initiation and
lighting propagation is not fully understood at this point”. It is said that
lighting cause more than 5 billion dollars damages every year in the United
States.
Xiangchao Li, a lighting specialist from china said that a
direct hit from lighting can melt a power cable or start a forest fire. He and
his team discovered a mathematical relationship between the current intensity
and the temperature inside lighting.
There are approximately more than 100,000 lighting strikes
every day, a device known as an impulse current generator system; this
generates artificial lighting with currents up to more than 10,000 amperes
while a current with few amperes can easily kill an adult male.
A natural lighting strike carries between 20-30,000 amperes
of current, with the use of the impulse current, Li and his team was able to
dial up currents between 5,000 and 50,000. It resulted that the artificial
lighting strikes had temperature as high as 17,000 degrees Fahrenheit, two
times the heat of the surface of the sun after lots of tests; they concluded
that the temperature difference between lighting strikes with 1,000 and 10,000
amperes is similar to those with 10,000 and 100,000 amperes
"The next step would be to compare with measurements
from rocket triggered lightning, or natural lightning, which can be done
throughout the U.S. or China," Moore suggested..
That's right, rocket-triggered lightning. Essentially a
glorified version of Benjamin Franklin's wired kite, scientists today have ways
to siphon natural lightning from the sky by launching an electrically grounded
rocket
This research has helped engineers to improve current protocols
and infrastructures to better deal with lighting the creation of weather
warning systems and power grids are also formed from the research made by
Xiangchao Li and his team.
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