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Beijing April 30, according to desire. However, we have the ultimate mental and physical limits on how far out from it?
1. human speed limit is how much?
speed limit is the number of human
fastest Usain Bolt of Jamaica World Championships in Berlin in 2009, breaking the world record with gold hundred meters, turn by his own world record by 0.11 seconds. What is the human speed limit how much? Stanford University's Mark - Danny (Mark Denny) on this issue is very curious, decided to meter how quickly human-depth inquiry.
through his analysis of various track and field competition since 1920 (even games like horse racing) world record, the results found that many games have followed a similar pattern, that is, gradually increase until stable results. Such as Kentucky Derby will be many horses in 1949 after the speed limit is difficult to achieve further breakthroughs. Like human athletes seem to follow this pattern. Women's achievements in 1977 meter stabilized, the man is still in improving sprint performance, but Danny said that based on the model of other events, the results looked fast to the limit.
According to his forecast,
2010-11-25 - Qzone log, the limits of man meters is 9.48 seconds performance, only Biboerte less current world record 0.1 seconds. Danny said: Danny believes that players like the power of reason - weight ratio. More than a certain point, more robust and longer limbs, the muscles will be lifted even more numerous advantages of the increased material offset energy consumption.
2. human attention to adhere to long?
to adhere to human attention for how long?
focused most of us to finish a paper before the deadline, and work until late at night when driving long distance challenges. In the brain needs a rest, we really want to persist long in the psychological? For those who need to concentrate on those who engaged in a work, such as truck drivers, plant operators and the flight the pilot, 12 hours is the limit. However, for the doctors, sometimes complicated surgery more than 12 hours, although the longest surgery often shared by more than one team.
2004 years ago, doctors from the British weekend classes on Friday morning to Sunday night has been a total of 80 hours to work. They sleep a few hours at best, in the worst cases, they did not even 80 hours had a wink. According to the British Hospital, Cambridge, Yi Dengbu neurosurgeon Helen Brooks - Fernandez recalls: Lower the efficiency of the results, decision-making longer, errors began to increase. University of Pennsylvania neuroscientist David - Dinges (David Dinges) said: workers of the brain. With the reaction becomes slow, the reduced activities of certain parts of the brain. Dinges found that the amount of the participant the right parietal bone blood flow, can predict their test results.
3. people can be long to live either in a vacuum?
people long to live either in a vacuum state can?
Unfortunately, we do know that people suddenly exposed to vacuum can live long. In 1971, the Soviet Union 11 spacecraft back to Earth's atmosphere at the moment before, a fault at 168 km altitude valve so that a sudden decompression of the spacecraft, killing all three astronauts were killed. After the survey found that 11 spacecraft Union pressure suddenly drops to zero, which lasted for 11 minutes and 40 seconds, until it re-entry.
astronauts due to hypoxia in the 30 to 40 seconds, had died. Former NASA space shuttle mission crew Jonathan - Clark, said: could rescue came. In 1966, NASA's technical staff is a vacuum chamber test space suit, this time, the indoor pressure suddenly dropped altitude before we met in the 36,500 m level. He was 12 to 15 seconds to lose consciousness.
he can remember the last thing that the vaporization of saliva on the tongue, this is because the water will evaporate in the low-pressure conditions. 27 seconds, the pressure of the vacuum chamber back to the level equivalent to an altitude of 4200 meters, and that technicians lucky enough to recover consciousness. Although the pale, but his health did not suffer any adverse effects.
when the external pressure decreases the formation of air bubbles in the blood, lung damage within minutes. Because nitrogen leaching from the blood, nervous system within a few hours will be damaged. Sudden drop in pressure is fatal to humans: the air into the lungs will explode in a few seconds. However, according to Clark describes, if a more appropriate way into the near-vacuum state, and strengthen the health care services around a team, we may survive up to one minute.
4. humans can remember exactly how much?
humans can remember how much exactly?
11-digit phone number to remember for most of us, it is difficult, but the current World Memory Champion, Chao Lu of China in 2005 can recite pi 67890. Is the real capacity of the brain than it really is a drop in the ocean, however?
acceptance of our information very powerful. Morris Leighton in New Jersey in 1986, Bell Communications Research, Thomas Randall of the work of people looking at pictures and information can be stored in the number of visual and verbal information, and how quickly they forget. After the study, he estimated that about 125M adult life, can store this information, the equivalent of 100
accurately remember the correct order a long list of numbers more difficult than the memory or picture messages. To explore the limits of memory length, consider the use of memory techniques may be helpful title. Many of them use a memory techniques. Before the number at the beginning of memory, they will be from 0000 to 9999 four-digit and the person or object for each link. As a result, the number pi was transformed into a sequence of these people or things, by making up a story to link these people or things. This disorder can also enhance the number of interesting and consolidate memories. Lu Chao memory 40000 pi spent about 1,000 hours. No matter how good memory, assuming that the ratio according to a person from the age of 20 pi, 12 hours every day, then to the 70th birthday, he can recite about 8.76 million.
5. humans can tolerate much lower temperatures?
human can endure low temperatures and more?
human hate the cold for a reason: Our body is longer, it tends to heat easily,
AIR STAB, do not keep the heat. The earliest evolution of human hot African savannah, long limbs are very important significance. Study of human body temperature regulation of the University of Portsmouth, Michael Tippet Burton pointed out that even without the means to keep out the cold - clothing, heating and house, all of us still living.
survive in the cold will protect the core body temperature. One of the core body temperature is 37 degrees Celsius, but it reduces the speed of a surprise. Physiologist at the University of Ottawa, Canada, Harman said Frank Augustine, if damp and windy conditions, the ambient temperature of 20 degrees can cause hypothermia. When cold, the body began to tremble and stop the blood flow to the limbs. As long as the core body temperature reduced by 2 degrees of hypothermia can occur: first, people began to lose consciousness, and then heart failure rates. About 24 degrees heartbeat will stop, people will die. However, core temperature was significantly lower in the case alive. An Naba root Holmes is such a person, her body temperature had dropped to 13.7 degrees Celsius is still alive, when she accidentally fell into an icy stream, trapped saved after 80 minutes.
flow of ice water to cool her body temperature this one: respiratory arrest, cardiac arrest,
nike air max plus 2009, the brain basically do not need oxygen, which made her the opportunity to have a full recovery.
6. eat or drink can be long to live either?
eat or drink can be long to live either?
human survive without water and food, how long? In theory, if you finally run out of the body fat, protein and carbohydrates, your body will stop working due to energy depletion. David Blaine in London in 2003 after performing on a hunger strike resumed eating nutrition guide doctors when Jeremy Powell Tektronix believes that no human deaths so completely depleted of energy: the body has sufficient water-soluble B vitamins to help the metabolism of fat reserves, then, fat people may live longer. Therefore, people still starve to death when the body fat is totally acceptable.
longest without eating record in 1981 Irish hunger strike by protesters 基兰多尔蒂, 73 days after he died in the hunger strike. In the case of vitamin supplements and water, people can live without food for one year. Tektronix, Powell said: A person can live without food for several weeks under, but a thirsty man to adhere to the days of dehydration. Massachusetts Institute of Environmental Medicine U.S. Army Michael Savoie card said: Blood becomes more viscous, making the blood circulation in the body become more and more difficult, people's heart rate will increase to make up for it. Even in a cold environment, no water, people can only adhere to one week.
7. how long humans can not sleep?
how long humans can not sleep?
1963 年 12 28, San Diego, California, 17-year-old Randy Gardner in the students get up at 6 am, he felt full of energy, so that continued until January 1964 to sleep again until 8 **, That he has 11 days did not sleep. Gardner broke the record before the record of 260 hours without sleep, he set the record of 264 hours is still the longest ever scientifically proven does not sleep long. California, Stanford University School of Medicine Weilian De Clement in a paper published in 1965, tells the story of Gardner to remain in his sleep the last three days has been with him.
Gardner experienced mood swings, memory and attention problems, lack of coordination, slurred speech and was hallucinating, but he otherwise everything is normal. After the 11 day after he first felt only lasted 14 hours. According to Dement said Gardner did not sleep during the process of continuous no doping. But someone actually be with him, keep him awake. If no one else to help, 36 hours after you have tried to restrain myself not to sleep after 48 hours you will find it impossible to resist the desire to sleep.
However, before you finally go to bed, you may have to sleep a few into a sleep state,
エアマックスプラス, during which you are often wide open eyes. Avoid micro-sleep aside, Gardner eventually be able to adhere to for how long? Nobody knows this, but we know that sleep deprivation will ultimately lead to death. Forcing the rats two weeks without sleep, they will die, more than the time required for them to starve to death is shorter.
no record of a person deliberately kept awake until death, but what is known as fatal familial insomnia genetic disease that humans do not sleep time is the maximum. The disease eventually deprived of sleep in patients with capacity, so that they died within 3 months.
8. how ordinary people can withstand the acceleration of gravity?
how ordinary people can withstand the acceleration of gravity?
roller coaster swooped down, we will take a very short time, 5g acceleration due to gravity, then we will have the feeling of dizziness and nausea. Seats must be specially designed, people will not faint. Our ability to withstand acceleration of gravity, depends not only on changes in acceleration or deceleration and duration, but also on the direction of our body. We are in the direction towards the foot of the force exerted the most sensitive, because it allows blood flow to the brain. Body in a vertical position in the context of 4 to 5g for 5 to 10 seconds, often can cause tunnel vision, and then lost consciousness.
fighters up in the vertical state of the acceleration of gravity 9g, the pilot's ability to withstand such an environment, the stronger, the better the air war. Some pilots wear Gravity to withstand the strongest of people known as the UK-based defense company Qinetiq, a biologist Alec Stevenson said: .
centrifuges in the pilot by training, can improve their tolerance to withstand the natural gravity, Qinetiq Farnborough Hampshire in the UK there is a such a centrifuge. They learn to tighten the legs and abdominal muscles, promote blood flow to the upper body and lower blood pressure through a special breathing method. It can withstand the maximum weight is 31.25g, but in order to achieve this goal, NASA doctors Flanagan Gray into a special tank, the tank pressure to his body, so much to help him withstand the acceleration of gravity . Air Force pioneer John Stapp maintains the highest level of gravity record.
9. what can board the tall man's place? What can board the tall man
place?
strange elevation differences will affect the human body, in most cases, the high altitude air, the oxygen pressure decreases. Human cells need oxygen to survive. At higher altitude, the lungs of oxygen to cells of the blood protein - hemoglobin can not efficiently deliver oxygen, which leads to human hypoxia. The brain is very sensitive to oxygen levels, and this is the first reaction of altitude sickness is headache,
Model pose by the tactics of the Complete Works (from POCO) - Qzone log, dizziness reasons. University of Southampton, UK 麦克格洛科 special that person who had been staying more than 5000 meters above sea level where it will lead to muscle atrophy, lung and brain significantly increased the risk of fluid, but they may be unable to have children in that because of the high altitude temporarily suppress male fertility. Gloria Cote d'altitude studied the impact of physiological differences.
if people live in this environment for a long time, most people can eventually adapt. A good experience is that the higher your board, stay too time should be shorter. If you do not adapt to the new environment before being suddenly sent Everest (8848 meters), may not appear in 2 minutes you will die. Only a few people in the absence of added oxygen gas case
Everest. In 1999, Babu Qi hypoxia in Sherpas live in the Mount Everest for 21 hours, a world record. Gloria Cote said, may have to adapt to high altitude 奇里夏尔巴 natural environment. How high the human place in the highest survival? May be close to the height of Mount Everest. Gloria Cote said that so far only one person in the winter, the case without oxygen equipment to climb Mount Everest, when atmospheric pressure down even lower, less oxygen in the air. Up to how much human
weight lifting?
world record dead lift weight up to people by the British Andy Bolton creation. He will be a weight of 457.5 kg from the ground mentioned in the thigh. Youngstown, Ohio State University sports coach Dan Wase said that Hercules like Bolton may be the ordinary people the power of 5 times or 6 times, the average person of 45 kg of weight over his head has been very difficult to the. Over the top record is 263.5 kg weightlifting.
human could lift the maximum weight is how much? University of Southern California in Los Angeles Rod Todd Basescu believes that we are near the limit that can be achieved. He said: depends on how much weight from muscle. In the weightlifting competition, failure to cite the vast majority do not make the body and damage, as lifters can not afford to be because of the weight to give up. But if forced to cite the failure is often caused by tearing of muscle fibers, usually near the tendon fibers.
can effectively control the muscles so that lifters an advantage. Inhibition of the human body has natural mechanisms to protect the body weight due to the heavy lift damage. The work involved in weightlifting by controlling a number of muscle fibers to be realized. Weightlifter trained to know how to suppress these signals, and then play a greater muscle potential. In addition to this control, another key success factor is training. Of course,
四川九寨沟之旅随影！, genetic factors also play an important role. Vassar was a weight lifter. He said:
how strong the human body can withstand up to the radiation?
1987 年 9 months, the two men walked into an abandoned Goiania Brazil, clinics, remove the one they think they are very expensive equipment. One day, both symptoms of vomiting, followed by diarrhea and dizziness. They do not know that this waste is actually a high-radiation devices for the treatment of cancer patients.
the radiation source emits blue light in the dark. Scrap merchant 德瓦尔费莱拉 a keen interest in it, and finally to spend money to buy. Fei Laila size of this glass jar containing powdery substances on the dining room, and invite your friends and relatives to visit. They will be powder coated in the body,
air max 95 安, let yourself become a shining person. But they did not think the million that magic powder is actually radioactive cesium chloride. Month, Fei Laila's wife, 6 year old niece and two employees died of acute radiation syndrome. In this accident, a total of a total of 249 people have been radioactive contamination.
unit sievert radiation dose, according to the type of radiation and radiation of the body parts were calculated. The results showed that all the dead within a few days the radiation dose of 4.5 to 6 sievert. We radon and other natural radiation sources in each of the radiation dose by an average of 2.4 cents sievert. That is,
nike air max plus, 4.5 to 6 sievert is already a fairly large dose.
2 sievert dose of radiation can result in about early death, 6 sievert is likely to cause death. Fortunately, despite the 7 sievert radiation, Fei Laila still alive. In 1994, he died due to alcoholic liver cirrhosis. No one knows exactly why Fei Laila can be such a high dose of radiation in the case still survived. The most likely explanation is that he and his wife spend most of their time outdoors, so that the body cells have time to fix some damage.
12. human breath can be closed up long?
longest human breath can be closed for how long?
the time most people are very difficult to breath more than a minute, compared to the French Stefano Mi Fusu but has a powerful self-control. June 8, 2009, Mi Fusu staged a feat, breath time to 11 minutes 35 seconds, thus creating a new world record for breath at rest.
challenge, the contestants will face soaked in a cold pool. Do not prevent them from cheating, but aroused the instinct diving mammals launch. When the facial immersion in cold water, the external blood vessels, blood flow to the heart from the lower extremities and brain. As a result, the heart rate will slow down thereby reducing the probability of oxygen diffusion to the body. Trained experts in the breath when soaked in cold water and heart rate is only half of non-divers.
time record in the challenge before the breath is also very important to hyperventilate. This is because the brain monitors the carbon dioxide in the blood, and so to decide when to trigger the breathing reflex. Rapid and deep breathing can be eliminated from the body of carbon dioxide, thus reaching the physical limits of time before the breath as long as possible. So,
ナイキエアマックス95, with the larger lung is a natural advantage.
human breath limit has been achieved it? John Anderson, University of Lund, Sweden, physiologist gives a negative answer. The gas has been closed for divers to study the effects of the physiologist, said: They may also be at risk. Anderson found resting on dry land can lead to blood breath S100B protein content of 37%, this protein is a hypoxic brain injury markers. He said that although the magnitude of this increase is far lower than the levels found in hypoxia, but challenges still breath the damage on those who may continue to accumulate in the long term. (Takafumi)
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