30 divers are missing

It's so mysterious, and the information about the world's unsolved mysteries is usually in the internal data of the army, and how can we know.

Entered the Bermuda Delta...

Now in a vegetative state!

A boy in Chongqing fell on the steps after diving on a high platform two years ago and became a vegetative state, and the court sentenced the kindergarten and related schools to pay more than 600,000 yuan in compensation.

The parents of the five-year-old boy at that time demanded more than 900,000 yuan in compensation from the kindergarten and the relevant school that trained their son, and the court yesterday ruled in the first instance that the relevant school and kindergarten should pay more than 600,000 yuan, but the defendants appealed.

On the morning of December 5, 2007, while diving on the 10-meter platform, the boy felt nauseous due to irregular movements, his stomach and thighs were red by the water. Two days later, after jumping off a 7-metre platform, he fell by the pool and fell into an instant coma. After hospital surgery, the boy's life was saved, but he never woke up.

He died 2 days later, his brain died on the spot, he was unconscious, but his heart continued to beat.

Really committed suicide in '66, and it is rumored that the Nobel Prize in Literature was already ready to be considered for Lao She, but he committed suicide, resulting in the award of the Literature Prize that year to a Japanese. As for why, it is estimated that it is unbearable to be humiliated, the people at that time were very inhumane, and even the army was in chaos, not to mention the locality, villains take power, annihilate people, there is no way.

I forgot what newspaper I read that it was written:

It was the Cultural Revolution period.

It was found that Mr. Lao She had applied to join the party many times and was rejected by Comrade *** (at that time, it was because Comrade *** felt that it was more meaningful for a well-known person outside the party to praise the party than to let Mr. Lao She join the party, so Mr. Lao She was not allowed to join the party at that time).

But during the Cultural Revolution, people brought up this incident and said that it was because Mr. Lao She was a reactionary or something, and they attacked and insulted him many times.

In the end, Mr. Lao She was humiliated and committed suicide with *** quotations in his arms!

At that time, the Cultural Revolution was very fierce, and Lao She, like many people, had been criticized and tortured mentally and physically, and was forced to commit suicide.

In that society that reverses right and wrong, people are crazy, and there is more terrible madness than Lu Xun's "numbness". , it has become a devil who has come out of hell.

Lao She (1899-1966), male, formerly known as Shu Qingchun, the name Sheyu, and also the pen names Jieqing, Honglai, Fei I, etc. Beijing Manchu Zhenghongqi people. He is a modern Chinese writer, a writer, a language master, a people's artist, a screenwriter of Beijing Renyi, and the first writer in New China to win the title of "People's Artist".

Because Lao She was born in Lichun, his parents named him "Qingchun", which probably means to celebrate the coming of spring and have a bright future. After going to school, he changed his name to Shu Sheyu, which means "to abandon oneself", that is, to "forget oneself". Representative works include "Camel Xiangzi", "Four Worlds in the Same Hall", and the scripts "Teahouse" and "Dragon Whisker Ditch".

That Japanese man was Kenzaburo Oe.

There will be danger.

Once the jump is smashed in the high-altitude diving, the angle of entry into the water is not good, and it will definitely hurt the body and even be life-threatening. In addition, the common injuries caused by diving, such as damage to the retina, are also encountered by high-altitude diving, and they are more severe.

Divers are vulnerable to danger if they are not professionally trained:

1. Corneal damage.

Diving can take a big hit on a person's eyes. Divers don't wear swimming goggles because they're professionally trained. Inexperienced people, some out of imitation, some are worried that the swimming goggles will fall off, and the result of diving without swimming goggles is corneal damage and astigmatism.

2. Spleen rupture.

People who dive often have an incorrect posture and are prone to stomach first in the water, which may injure internal organs and even cause fatal consequences such as a ruptured spleen.

3. Cervical spine injury.

Most cervical spine injuries occur during diving, which are caused by illegal diving. For example, when jumping out of the starting platform, the platform is weak, or the entry point is too close, or the hip joint is not straightened when pushing the platform, or the angle of entry into the water is too large, or the impact on the body of a swimmer when entering the water, etc. In addition, the pool water is too shallow (less than 2 meters) to be one of the reasons.

If you are diving in rivers and lakes, the main cause of cervical spine injury is that the bottom of the river is too shallow or there are obstacles such as wooden stakes and stones in the water. In the summer, when the head of a person jumping into the water hits the bottom of the river or an obstacle, the head and neck are twisted, resulting in cervical fractures and dislocations.

4. Brain**.

If the diver's head falls into the pool first, it will cause serious brain **, and even suffer the bad luck of a broken skull, which may kill you on the spot.

5. Cramps and cramps.

When divers come into contact with the water, they often experience cramps and cramps due to the tremendous force of gravity exerting on their bodies, and a large amount of adrenaline flows into their blood vessels.

1.Considering that the situation of falling to death is that at the moment of contact with the water surface, the reaction force of the water surface to people is equivalent to the heavy injury of a person falling on a concrete floor.

2.Since it is a professional, a certain amount of knee flexion is guaranteed, and the assumed condition is straight, and the area touching the water surface is the size of the ball of the foot.

3.It is assumed that the person who fell into the water is an adult who is in good health.

Let's discuss the calculation ideas:

1.A review of the information yielded an example of an adult falling on a concrete floor with his feet bent on his knees and no external cushioning.

Referring to the example of direct death, it is difficult to check, so here it is simplified to a fracture, and the critical point of the person's stress is 9600N

2.Considering that the soles of the feet (2 pieces) of an adult are about 300 cm2, the next step is to calculate how high an object with a contact area of 300 cm2 can generate a contact force of 9600 n when it comes into contact with seawater vertically. 0 0 to find the great god of elastic mechanics and material mechanics to solve...

I forgot.

This is related to two aspects, on the one hand, the weight of the person, and the other is the height you are at, for example, the water depth of the 10m diving platform in the world is now, but the weight of the average athlete is relatively light, so it is generally the safest, I think it takes 6m, I hope it can help.

Then you have to put your feet together, or you shoot it, you hit the balls, and you break and play.

Don't play at a distance of more than two floors Ordinary people don't have so many professional skills It is also common for the internal organs to have problems when shooting flat on the surface of the water.

If you go straight into the water with your feet down, you will definitely be fine, and you will not die, and you will be fine for fifty or sixty meters. The contact surface of the straight into the water is small, the surface tension of the water is small, the force that reacts to the human body is small, and there is no harm to the human body. Unfortunately, except for trained divers, ordinary people cannot guarantee that they will be able to enter the water straight, and the higher they are, the more they will lose their balance, and they can only resign themselves to fate.

So don't try that high, maybe more than ten meters can kill you.

There is no absolute, right, it has a lot to do with people, for example, when entering the water, the feet are not straight, bent or something, I personally think that more than 30 meters is very unsafe, and it is to be professional, if it is not professional, maybe this height is not good.

For example, the world's cliff diving is about 28 meters, and sometimes athletes can get injured if they are not careful, and I think this height is a limit for the average person.

Maybe no one has done a real experiment, but it's a theoretical number.

To ensure that you are okay, you must first go straight into the water Break the water with both arms to protect the braincase Jumping into the water and not being shot to death by the water does not mean not dying After entering the water, the huge resistance and the acceleration it brings will cause brain congestion Once the brain consciousness can't react for a while, don't forget that you are breathing with your lungs It is no problem for ordinary personnel to jump 20-25 meters After training If you talk about the limit, the height of the world's highest diving record is as high as 61 meters, but the diver also broke his backbone because of this Why don't you believe in the movie.

Put your body in the air, and the speed will be reduced to more than 100 kilometers per hour, and if the clothes are loose, the speed will be a little lower. The speed of a straight fall accelerates to 240 kilometers per hour, which is the least drag... You can only slow down your body first, and when you are about to enter the water, you suddenly change your posture and enter the water straight with your feet facing down...

This is the only way to go, and the worst case scenario is to be knocked unconscious by the force of the impact, and then drown in the water. Or the posture of entering the water is not correct, and the internal organs are broken on the spot. It's also possible that you're not unconscious, you have to be able to skydive and swim.

Otherwise, neither would have been possible. If it is implemented, it must be fatal...

The highest diving level is 60 meters, only a few people in the world can, professional divers are 30 meters, but if the water action is improper, they will still suffer different degrees of injury, diving enthusiasts who are proficient in diving skills are 15 meters, and ordinary people 10 generally do not suffer much damage.

If you have mastered certain skills and methods, your life will not be in danger! [Pay attention to posture to make life healthier and beauty simpler].

1st place : b

2nd place :d

3rd place: a

4th place: e

5th place: c

It was so hard that I didn't make it for half a day.