This afternoon,
Nanchang was thundering, a little scary!
But in this season, thunder and rain are not uncommon.
Jiangxi is a high-incidence area for thunderstorms!
According to the measurement of the Jiangxi Provincial Lightning Positioning System,
00 to 900,000 lightning strikes are hit every year in the province, and the lightning disasters are serious. There are many lightnings in
Ganzhou , Ji'an , Shangrao, Fuzhou and Yichun.
In recent years, the number of people killed by lightning strikes has dropped significantly,
However, lightning strikes still occur frequently.
According to incomplete statistics,
From March to April this year,
Four people in Jiangxi Province died of lightning strikes, and
From April to June, 5 people in Ji'an alone were killed by lightning strikes!
3 of them were all hit while working in the fields!
Recently, Jiangxi has more thunderstorms and
While preventing floods, it is also necessary to prevent lightning strikes!
Let's take 1 minute to get to know lightning.
How does lightning strike occur?
Some people say that
Thunder and lightning are things caused by the Thunder God + the Electromotor, and
whoever does bad things will be slashed!
—It’s all about scaring children.
is actually the role of cumulonimbus cloud .
In other words, the cumulonimbus cloud comes out for a walk with negative charges,
The ground is in a daze with positive charges,
No one likes anyone,
It generates current after a while, and the light appears in
It is lightning.
When lightning occurs, a large amount of heat will be generated.
causes the surrounding air to expand rapidly and make a huge roar.
This is the process of lightning.
4 ways to damage people by lightning
Direct lightning strike:
is that lightning strikes directly on the human body,
Because humans are also a good conductor,
passes through the human body and then flows into the earth.
In the early morning of July 20, 2018, the open-air concert of the "Rural Thunder Music Festival" in the United States is underway.
A sudden storm caught the audience off guard.
A 22-year-old woman was seriously injured by lightning while walking.
The phone was confused, and a hole was penetrated on one side of the phone.
Step voltage:
will gradually spread after lightning strikes the earth.
happens to be a human or animal nearby.
and both feet hit the ground at the same time, the larger the steps you take, the greater the step voltage of
!
So, it is safer to hide indoors when thundering.
contact voltage :
As the name suggests, that is, when lightning strikes a certain conductor , the
conductor will have tens of thousands to hundreds of thousands of volts.
If there is sand in the shoes,
don’t shake when thunder is blowing,
Who knows if there is still residual electricity in the thing you are holding!
Blitz side:
As mentioned earlier, people are also good conductors.
Because the resistance is very small, even if lightning strikes the tree, when someone is sheltering from the rain, some of
will be attracted, and
causes lightning to hit people!
On May 23, 2004,
A primary school in Chongqing was hit by lightning.
The window was not grounded. Students near the window were affected by lightning.
A total of 46 casualties in the fourth and sixth grade students in the primary school were killed and killed,
Among them, 7 people died, 19 seriously injured, and 20 people were slightly injured.
How powerful is the lightning?
lightning current average is about 20,000A (or even larger),
voltage is about 10 volts to the power of 10, and
human body safety voltage is only 36 volts!
average power emitted by lightning reaches 20 billion kilowatts, and
The power of a general rice cooker may be less than 1,000 watts.
The world's largest hydropower station ——Three Gorges Hydropower Station. The total installed capacity of the
power station is 18.2 million kilowatts, and
is only one thousandth of the power of lightning at one time.
How great would it be if such a large amount of energy could be used?
There was once a scientist named Franklin.
had a special liking for scientific experiments of electricity.
Once in a thunderstorm,
He tried to collect lightning with a kite and a Leiden bottle.
but failed due to storage, conversion and other issues.
But he invented the lightning rod!
still makes great contributions to mankind.
How to avoid the damage of lightning strikes?
When lightning comes,
Don’t hold an umbrella and wander around outside.
Whether the handle of the umbrella is metal or wood,
may be conductive, remember!
Don’t stay under big trees, on mountains, or in the open space for a long time.
must hide in the building in time.
In addition, because the smoke has good conductivity,
, the chimney will often be patrolled by lightning.
Also, don’t use any electrical equipment!
Mobile phones, TVs, and computers may be destroyed by the electromagnetic field of lightning. If the conditions allow, unplug them. It is not cost-effective to buy new ones...
Be sure to stay away from all kinds of metal items.
includes taking a bath with a solar water heater.
is very likely to hit the lightning, and
will follow the line and shower!
Of course, lightning weather is not without benefits.
Do you think the air after the thunderstorm is particularly good?
is because lightning energy creates negative oxygen ions.
can purify the air.
takes a sip and feels that the world is fresh!
Because of the strong potential difference,
can also enhance the photosynthesis of plants,
thus promoting the growth of organisms.
A last piece of advice!
If someone is unfortunately struck by lightning,
Remember to immediately take first aid measures for CPR,
and quickly send it to the hospital!
diffusion, well-known!
