5503 Decibels
action!
Once the veterans of Huaxing Society, or the "Wolf Fang", start to act, they will be like a pack of wolves looking for food. They will approach quietly and reveal their sharp fangs at the most appropriate time, giving the enemy the most deadly blow.
hit.
The backbone of Huaxing Society are all veterans from ‘Langya’. Apart from guns, what they are best at is concealed weapons, Chinese concealed weapons!
Wang Meng is good at iron balls, so the kung fu masters in "Langya" are all good at using hidden weapons. Of course, everyone chooses different hidden weapons according to their own conditions. For example, iron balls, which are steel balls, need to be extremely powerful.
The finger strength is not something that ordinary people can achieve. Therefore, each warrior chooses different hidden weapons according to his own conditions, including throwing knives, darts, etc.
As for why concealed weapons are chosen, it is because under certain special circumstances, even silenced weapons cannot be absolutely silent. Of course, to be precise, silent pistols should be called silent pistols.
A silencer sleeve is installed on the barrel of the pistol. The front half of the silencer sleeve is equipped with a tightly rolled silencer wire mesh. When the bullet is fired, the high-pressure gas ejected from the muzzle does not directly expand in the air, but enters the silencer.
Most of the energy is absorbed and consumed by the silencer screen. When the remaining gas is ejected from the sleeve, the pressure and speed are very low, and the sound is very weak. Moreover, there are some pores in the second half of the silencer sleeve.
, used to reduce the instantaneous air pressure when the bullet penetrates and shoots out.
Finally, the silencer sleeve ensures that the sound of the bullet when it exits the barrel will not exceed 80 decibels. As for what level 80 decibels is? The human body needs a quiet environment when sleeping normally. And 0 to 40 decibels is a relatively quiet normal environment; more than 50
Decibel will affect sleep and rest. If it reaches 70 decibels or above, it will interfere with normal conversations between two people, cause upset, lack of concentration, affect work efficiency, and even cause accidents; long-term work or life at 90 decibels
The above noise environment will seriously affect hearing and lead to the occurrence of other diseases.
How loud are the common noises in human life?
0 decibels: The sound of a mosquito flying about 3 meters away is 0 decibels. The human ear cannot detect it at all. So, if a mosquito bites you, you cannot perceive it through sound waves.
And a very quiet room means that the doors and windows are closed tightly at night. There are no vehicles passing by outside, and the human voice is 10 decibels. The world is completely silent to the people in the room.
Slightly higher, the buzzing sound of the light bulb is 13 decibels. If you put your ear against the light bulb, you can hear the buzzing sound more clearly. Of course. Generally speaking, no one does this kind of thing, because it will
Got burned.
In Chinese language classes, there is usually such a metaphor - the scene is so quiet that you can hear a pin falling on the ground. So, what is the decibel of a pin falling on the ground? 15 decibels! 1 meter
The sound of a pin falling from a height of 1 centimeter. So, in fact, this metaphor is not very appropriate from a scientific point of view. Because you can't hear a pin falling at all.
Sounds from the ground.
When thinking about the countryside, beautiful pictures of the moonlight over the lotus pond and the chirping of frogs and insects will come to mind. And in such a pleasant countryside night, the sound level is 20 decibels. Therefore, the human body can easily fall asleep at night in the countryside.
A country night is 20 decibels, but what about a desert night? How many decibels will it be? Will it be quieter than a country night? No, the decibels at a desert night are as high as 30 decibels. Because of the sound of the desert wind and the rolling sound of sand grains, there will be a slight
It is higher than the noise in the countryside. Of course, with only 30 decibels, the human body can still fall asleep quickly.
And what is the sound level of our normal conversation? 40-60 decibels, except for some people who are born with extremely loud voices. The decibel level of normal people's conversations is 40-60, and although this sound is not loud, it is enough
Affect a person's normal sleep.
So, how loud is the sound of a washing machine that everyone often hears? 50-53 decibels. This sound is considered to be within the acceptable range of the human body and has not yet entered the level of noise pollution.
What about cars? When it comes to cars, they usually think of noise. Normally, when a car passes by, the noise caused by a car passing 10 meters away is as high as 60-80 decibels, which usually exceeds the maximum noise level that the human body can tolerate.
As for the maximum noise that the human body can accept? 70 decibels! This is a watershed. Beyond this sound level, it is difficult for the human body to tolerate it. And what are the daily tools that usually reach this level? A vacuum about 3 meters away
The sound of a vacuum cleaner working. This sound is basically the limit that the human body can tolerate. No matter how loud it is, if it continues, it will cause hearing loss, sleep disorders, anxiety, learning disabilities, etc.
Therefore, when a large bus or truck passes by the human body usually 3 meters away, the sound is unbearable and irritating. Because the sound level has reached 90 decibels. Of course, when the food mixer at home is turned on,
The decibel level is also as high as 90 decibels, which is why the family cannot bear it.
Of course, there is another noise in the home that is unbearable for the human body, and that is the maximum volume of ordinary home audio equipment, which can be as high as 100 decibels. This volume is also unbearable for the human body. As for why it is turned up to the maximum, sometimes it feels so
What about beauty? The reason is that when you listen to music, the beautiful sound makes you intoxicated, and your brain automatically filters out a certain amount of noise so that you cannot feel it in a short period of time. But if you listen to music at maximum volume for a long time, you will find that you
His hearing has declined sharply. The best proof is that if you change a song that others think sounds good but you don't, you will instantly think it is noise.
When the sound wave reaches 104-107 decibels, no matter what music is played, the human ear will begin to feel pain. This is an extremely uncomfortable sound.
The sound of a jet engine 100 meters away is as high as 110-140 decibels. When hearing the sound of a jet engine, I believe many people will find it extremely harsh and irritated. Because this is already a sound that the human body cannot bear.
.
So how much noise pollution is there when listening to a rock concert? 120-130 decibels, no less than the noise pollution of a jet plane. Of course, only the first row of a rock concert has such treatment. This is why many people sitting in
This is why fans who enjoy rock concerts in the first row have tinnitus in their ears for the next few days. If you often sit in the first row and listen, basically speaking, your chance of hearing loss is much higher than that of ordinary people.
of.
So, what is the loudest scream a human can make in decibels? 128 decibels, this is the loudest scream ever recorded by humans. And this scream can directly cause tinnitus in the human body.
Of course, at this level, unless exposed to the noise pollution source for a long time, there is no harm to the human body. But when the decibel reaches 140 decibels, even the briefest sound can cause hearing damage, accompanied by nausea and vomiting.
It feels like this. But ordinary pistols will make such noise when fired at close range in human ears.
As for the M1 Garand rifle fired from 1 meter away, its decibels are as high as 168 decibels. Within a range of 1 meter, you will be momentarily temporarily deafened, and may be accompanied by lifelong hearing damage.
An explosion of 1 ton of TNT explosive 75 meters away will produce a sound wave attack of up to 175.8 decibels. Human beings within this range will basically have absolutely absolute hearing loss, which is unstoppable and irreversible.
And what about higher decibels? For example, if it explodes within 1 meter, what is the decibel? 192.8-194.7 decibels. No matter what explodes, no matter how close the distance is, the highest decibel is only as high as 192.8-194.7 decibels. Because this is the earth
The maximum intensity of sound that atmospheric pressure can theoretically propagate. No matter how high it is, it can only be so high. Of course, if it reaches this decibel, the eardrum will be shattered in an instant.
Therefore, for the 'Langya', the silencer of the silent pistol, which is less than 80 decibels, cannot meet their requirements. Especially for well-trained special forces, they can hear the unique bullet in a noisy environment.
The sound of a chest coming out. Therefore, 'Langya' chose to use a hidden weapon.
The maximum sound of a concealed weapon entering the human body will not exceed 30 decibels. This sound will hardly attract the attention of others unless it is in an absolutely quiet environment.
When Tang Feng announced the action, the backbone of the "Huaxing Society" led by him began to massacre the Colombo family. Although the five major mafia families in New York were opposed to each other, they also unanimously attacked the outside world. If today his Huaxing Society raided the Colombo family
If the news leaks out, then Huaxing Society will suffer crazy revenge from the other four major mafia families in New York. This will be detrimental to the development of Huaxing Society. In this regard, even if Lin Feng allocates all the "Spikes" to him, it will not be enough.
Because this is not Africa, this is New York.
Therefore, tonight's action must be to eliminate all the gangsters and leave no one behind! As for humanity, Tang Feng has always believed that the underworld does not need humanitarianism. Only when they die will the society be more peaceful.
"Puff", "Puff", "Puff"..., there are constant sounds of hidden weapons entering the body. The defense power of the Colombo family is useless to Tang Feng and others. Of course, the reason why they can invade so easily
Chapter completed!