More than once a sad schoolboy came with his head bowed and the words “why should I know physics if I don’t want to be some kind of scientist.” And after all, even adults find it difficult to answer the question why they need to learn these formulas, axioms, laws and postulates. By the way, far from one profession is associated with this science, here is a detailed list: pilot, radio mechanic, train driver, gas cutter, engineer, aircraft mechanic, programmer, climatologist, etc. To master most technical specialties, you must have the skills taught in school in this lesson. The knowledge gained will help the child become intellectually developed, he will be able to support any conversation and will know many interesting facts.
Also, physical laws surround people everywhere, we just don’t think about it. Let's look at everyday examples in which such skills come in handy.
First, movement. Everything on the planet is constantly moving, including the celestial bodies themselves. We can use physical formulas to calculate the time it takes us to get to a certain place.
Secondly, the force of attraction. Everyone knows the bizarre story about Newton and the apple. After all, for sure, each of us has often wondered why this or that object flies to the ground at such a speed, one breaks when it falls, and the other does not.
Third and most importantly, everything in the world consists of atoms and molecules, the features and functioning of which are studied by this area. Therefore, in order to better know not only the structure of the entire cosmos and our specific Earth, but also to know oneself, it is necessary to assimilate school material. A solution book written by professional methodologists and published by the Exam publishing house in 2015 will help with this.
Why does everyone like the educational and methodological complex in physics so much, a collection of tasks for grades 7-9 (author: A.V. Peryshkin)
The proposed guide will be useful not only for those who do not understand the topics in the lessons. Excellent students will have the opportunity to practice and consolidate their skills, go through sections in advance to be more confident in the lessons. Advantages:
- will allow you to prepare well for the upcoming control and final tests;
- the presence of correct answers to all compiled tasks;
- the site is compatible with all types of modern devices for accessing the Internet;
- online mode.
The contents of the collection with GDZ in physics, a collection of tasks for grades 7-9 from Peryshkin
- accuracy, measurement error;
- aggregate states of matter, difference in molecular structure;
- interaction, mass of bodies;
- pressure in liquid and gas. Calculations;
- work, power, energy.
Man's height
Man's height or human body length- the distance from the apex of the head to the plane of the feet. In anthropology, height is one of the common anthropometric features. Included in the list of indicators of human physical development.
Human growth, among other things, is influenced by environmental factors, heredity from parents, hereditary diseases, age, gender. Also, growth can be influenced by belonging to a particular race and nation. So, for example, the average height of Chinese citizens is 158 cm (for men) and 147 cm (for women), and the average height of the Dutch is 184.8 cm and 168.7 cm, respectively.
growth process
Some dwarfs became famous in military affairs. King Gustavus Adolf of Sweden, for example, kept an entire regiment of dwarf soldiers in his army.
A big increase
In itself, high growth is not yet a sign of gigantism - a serious illness caused by excessive production of somatotropic hormone. Healthy people with gigantic stature (200 cm or more) differ from people of average height only in their height. And people with gigantism also differ in proportions.
The tallest person of whom there is reliable evidence was Robert Pershing Wadlow, born in 1918 in Alton, pc. Illinois, USA. When measured on June 27, 1940, his height was 2.72 m with an arm span of 2.88 m. His maximum recorded weight was 223 kg.
The generally accepted rubrication of the length of the human body (height)
| Height | Man | Woman |
|---|---|---|
| Dwarf | below 150 cm | below 140 cm |
| Very low | 150-159.9 cm | 140-149.9 cm |
| Short | 160-169.9 cm | 150-159.9 cm |
| Below the average | 170-173.9 cm | 158-162.9 cm |
| Average | 174-176.9 cm | 162-166.9 cm |
| Above average | 177-179.9 cm | 167-169.9 cm |
| High | 180-189.9 cm | 170-179.9 cm |
| Very tall | 190-199.9 cm | 180-186.9 cm |
| Giant | from 200 cm and above | from 187 cm and above |
The average height of a man on the planet is 175 cm, and that of a woman is 162 cm.
Average age-related changes in height
At the age of 19-26, some men can gain 0.5 cm of height per year. Usually at this age those who have late sexual development grow. In women at this age, an increase in height is rare.
After age 26, people may also have some increase in height - usually up to 2 cm.
On average, men grow up to 18-25 years, and women - up to 16-19 years.
Sources
- Height- article from
- Gigantism- article from the Great Soviet Encyclopedia
Notes
Links
Wikimedia Foundation. 2010 .
- Dawson's Creek (TV series)
- Brookite
See what "Human Growth" is in other dictionaries:
man's height- see the length of the human body. * * * HUMAN HEIGHT HUMAN HEIGHT, see Human body length (see HUMAN BODY LENGTH) … encyclopedic Dictionary
MAN'S HEIGHT- see the length of the human body ... Big Encyclopedic Dictionary
Robert Pershing Wadlow is the tallest man in world history, about whose growth there is undoubted information.
Wadlow's parents were rather average height (father was 180 cm tall and weighed 77 kg); he (the first-born) had two younger brothers and two sisters, of normal height. Until the age of 4, Robert had normal height and weight for his age, but from that moment he began to grow rapidly and attract everyone's attention. At 8 years old, he had a height of 1 m 88 cm, at the age of 9 he could carry his father in his arms up the stairs, and at 10 years old he reached 198 cm in height and 100 kg in weight. At 18, he already had a height of 254 cm, weighed 177 kg and wore shoes in size 37AA (75 European); by this point Wadlow, now an All-American celebrity, was making shoes for free.
Over time, Wadlow's health deteriorated: due to his rapid growth, he had limited sensation in his legs, he began to need crutches. On June 27, 1940, his height was measured for the last time in St. Louis - the giant's height was 2.72 m. On July 4, 1940, during a speech on the occasion of Independence Day in Manistee, Michigan, a crutch rubbed Robert's leg, which caused an infection and rapidly developing sepsis. Doctors tried to save the life of the famous American with a blood transfusion and surgery, but on July 15, the tallest man in the world died in his sleep.
Wadlow's funeral was attended by 40,000 Americans: his coffin weighed half a ton and was carried by 12 people. Wadlow's grave was carefully concreted at the request of his family, who feared that Robert's remains would be stolen. On his grave is written only: "Rest in peace" (At Rest); his monument is twice the standard in the cemetery.
Source: Guinness World Records
7 Useful Lessons We've Learned From Apple
10 deadliest events in history Soviet "Setun" - the only computer in the world based on the ternary code 12 never-before-seen images from the world's best photographers 10 Greatest Changes of the Last Millennium Mole Man: Man spent 32 years digging the desert 10 Attempts to Explain the Existence of Life Without Darwin's Theory of Evolution Unattractive Tutankhamen Pele was so good at football that he paused the war in Nigeria with his game
If some people only dream of extra centimeters in height, then others, on the contrary, experience great discomfort and a desire to be in the role of a dwarf, especially when your height is more than 2 meters and you can hardly find clothes and shoes in size, you can’t get on public transport and lie down freely on a standard-sized bed. This is exactly how the tallest people in the world live sadly and not quite cheerfully.
The first on this list is Bao Xishun, whose height reaches 2 m 36 cm. The giant lives in China, in a country where people are mostly short.
Before him, the title of the tallest man was held by the Ukrainian Leonid Stadnik, who had a height of 2 m 53 cm, weighed more than 200 kg, and his palm size was 32 cm, which is also an absolute record. Leonid began to grow at a tremendous speed at the age of 12, due to a violation during a pituitary gland surgery, and by his 40 years he had a shoe size of 62. Note that a native of Pakistan who wears shoes has the largest foot in the world, just think , size 72. However, in 2014, Leonid died at the age of 44 from a brain hemorrhage.
If you study history and turn time back several centuries, then the tallest man in the Russian Empire was the peasant Fedor Andreevich Makhnov. It is believed that at that time (XIX) he was the tallest man on the planet, since his height was 2 m 85 cm, foot length - 51 cm and palm - 32 cm. Fedor weighed about 180 kg and earned his living by who performed in the circus. It is surprising that Fedor took a not low girl for his wife. The wife's height is 2 m 15 cm, and their five children also reached the 2 m bar.
The title of the tallest man on earth, now living, goes to Sultan Kesen from Turkey. His height is 2 m 51 cm. Such a large growth is due to a pituitary tumor. In addition, being a giant is not entirely pleasant for Sultan Kesen, since a man has to move only on crutches, and it is extremely difficult and expensive to find suitable clothes and shoes for himself.
The branch of the championship "The tallest man in the world", according to the official data of the Guinness Book of Records, belongs to Robert Pershing Wadlow, who was born in 1918 in Michigan, USA. Robert, like our previous hero, suffered from a pituitary tumor and acromegaly. Unfortunately, the man lived only 22 years, and grew throughout his short life. At the age of 8, his height reached 1 m 88 cm, at 18 years old - 2 m 54 cm, and at the time of death - 2 m 72 cm, and weight - 199 kg. As he grew, Wadlow's health only worsened, and later, against the background of an infection, he developed sepsis, and despite all the efforts of doctors, the good giant died in 1940. The coffin of the tallest man in the world weighed almost half a ton, and was carried by 12 people. Tens of thousands of people came to the funeral of the famous American. That's how famous Robert Wadlow was among his countrymen.
At least, this is what some scientists think, who decided to check where is the truth and where is fiction in the legends about the giants who inhabited the Earth in ancient times.
This mysterious story took place in 1912 near the small American village of Lovelock in Nevada. In an abandoned cave, digging up a four-meter layer of bat excrement for fertilizer, local farmers unexpectedly stumbled upon ½ mummies of huge red-haired people. The height of the mysterious giants exceeded the two-meter mark. Later it turned out that the local Payutti Indians had long known about the existence of a tribe of red-haired giants and called them "eaters of the dead." Why the tribe died out is unknown. 60 huge skeletons, extracted by farmers from the cave, were burned and used for fertilizer, and one of the few evidences of the existence of giants on Earth disappeared.
But others remained. Thus, there are legends about giants in the folklore of many peoples and even in the Old Testament. In addition, strange structures are scattered all over the Earth, which, according to some researchers, could be created by the hands of giants who once possibly dominated the Earth.
The ancient British called Stonehenge "the dance of the giants"
The surface of our planet is dotted with gigantic structures created many thousands of years ago. They are found in deserts, valleys, at the bottom of the ocean, in the mountains. Even skeptics have an involuntary question - who, if not giants, could build these wonders of architecture?
In Bolivia, not far from Lake Titicaca, huge stone platforms are scattered everywhere. The length of the largest of them once reached 29 meters, and the mass - 900 tons. This place is located in the Andes, at an altitude of 4100 meters. There are no trees around. It is impossible to move a 900-ton platform without wooden rollers. But even with wooden skating rinks, this is extremely difficult.
On the other side of the world, in the UK, is perhaps the most famous megalithic structure - Stonehenge. A circle of massive stone pillars (the largest is nine meters long and weighs 50 tons) was erected here thousands of years ago. The ancient Britons called this stone circle "the dance of the giants" and believed that giants built it. Who and how actually built Stonehenge remains a mystery.
Among the inhabitants of the Mediterranean island of Malta, there is a belief that their island was the last stronghold of giants in the world.
There are gigantic temples in Malta that are at least seven thousand years old, says Erich von Däniken, bestselling author of The Eyes of the Sphinx, who has devoted a lot of time to researching megalithic structures. “One of them is still called the temple of the giants to this day. Local legend says that the temple was erected by the giantess Sunsuna. The blocks are so huge and heavy that no normal person could move them.
Those who built all the megaliths of the ancient world inhabited this world before us, says Bruce Rax, bestselling author of The Architects of the Underworld. “Some called them gods, others giants. Only now can we truly appreciate these creations of architecture.
“There we saw giants and were like locusts in front of them”
The history of two amazing megalithic structures erected in the Middle East is reflected in the Bible. The first is the grand temple of Baalbek in Lebanon, mentioned in the Book of Kings. On its ruins are the largest stones ever used in construction. Even their true mass is unknown. These blocks were somehow carved, moved a distance of eight kilometers, lifted several meters and laid so tightly that even a blade or a piece of paper could not be inserted between them! According to legend, the temple was erected after the Great Flood by a tribe of giants for the biblical king Nimrod.
The spiraling Gilgol Refaim is located in the Golan Heights near Damascus. Built from loose stones with a total mass of 40,000 tons, it resembles Stonehenge. Both megalithic structures were erected about five thousand years ago. It is said that Gilgol Rephaim was also created by giants, and there is a quotation from the Bible that confirms this.
When the Jews came here and wrote the Bible, the building was already standing, says Israeli archaeologist Daniel Herman. “They documented the name of the place, indicating that this area was ruled by Ogg, king of Bashan. Ogg is described in Deuteronomy: "For only Ogg, king of Bashan, remained of the Rephaim." In Hebrew, "refaim" means "giant."
The Old Testament also tells how, wandering in the wilderness with his people, Moses sent out spies to find a place where he could settle. The scouts headed north to Hebron, and when they returned, they reported: “There we saw giants, and we were before them in our eyes, like locusts.”
But the most famous biblical giant was Goliath the Philistine, one of the five giant brothers.
Archaeologist Vandil Jones devoted his life to researching the history of Goliath and the ark of the Covenant of the Lord, which, according to the holy book of the Jews, Goliath stole.
According to legend, Goliath was slain by David, the future king of Israel, in a field 24 kilometers southwest of Jerusalem, says Vandil Jones. - Just three kilometers from the place where the famous battle took place, there is an overgrown mound 24 meters high. It is believed that Goliath rests here, but no one knows for sure, because excavations have never been carried out here.
Skeletons of huge people with two rows of teeth found in the American Midwest
There are also many large mounds in the American Midwest that are considered to be graves there.
Since 1850, a number of giant mounds have been excavated in the Midwest, says archaeologist David Hatcher Childress. -- In many cases, the skeletons of people whose height exceeded 2.10 meters were found. They had two rows of teeth, and in some cases six fingers on each hand and foot.
In the second half of the 19th century in California, a team of miners discovered a wall and began to break it, hoping to find an old treasure behind it. But there were the mummified remains of a very tall woman holding a child covered in fur and strange dust. The mummified remains of tall women have been found in Death Valley in Texas and other parts of California. But alas, all that remains of these finds are photographs and old newspaper clippings. However, there is also documentary evidence of one mysterious story that occurred in Nevada. It began in 1912. Farmers came to a remote cave near the village of Lovelock to get bat excrement for fertilizer. A surprise awaited them inside. Having dug out a four-meter layer of excrement, they stumbled upon decoys for ducks, baskets and ½ mummies of red-haired giants two meters tall and more.
It turned out that the Paiutti Indians living in the district had long known about the red-haired tribe. In 1883, Princess Sarah Winnymuka wrote a book called Life Among the Paiutti, in which she spoke of huge red-haired people who lived in a cave: “This tribe ate the dead. They went to war against my people. My people set to work and gathered firewood to close the entrance to the cave. Then they lit a fire and shouted, "Surrender or die!" No one answered. Nobody".
What happened to the red-haired giants is one of the great mysteries of the American Midwest. About 60 skeletons were recovered from the cave. But they have disappeared. It is possible that, along with tons of bison bones, they were burned and used as fertilizer, and evidence of the existence of giants disappeared.
Half-meter piranhas grew in a pressure chamber that recreated atmospheric conditions on Earth millions of years ago
Among us today, too, there are people of unusual growth. There are giants whose high growth is due to heredity. Perhaps their genetic roots should be sought in a tribe of giants? A scientist from the Israeli Weisman Institute, Dr. Marvel Antelman believes he has the answer to this question:
If we all carry the genetic material of the first man, then there is nothing surprising in the fact that giants live in us. Because there is a recessive gene that leads to the appearance of such people. For example, the height of men from the African Watussi tribe reaches two meters 10 centimeters.
Today there is a theory that in ancient times the environment favored the appearance of giants.
Optimal genetic manifestations are the best that is in the DNA of an organism, and they occur in favorable atmospheric conditions, says one of the supporters of this theory, Dr. Carl Boch. “Thousands of years ago, the ozone layer around the Earth was much thicker. Since then, it has decreased by almost seven times, and this has affected the lifespan of biological creatures. In ancient times, plants and animals lived longer and were larger. This is what we see in fossils. Elephants, for example, today are 2.40-2. 70, reached 5-6 meters. The wingspan of a dragonfly is about 10 centimeters, while its direct ancestor meganoropsis has about 1.5 meters.
After 35 years of research, Carl Boch built a hyperbaric chamber with double atmospheric pressure, increased electromagnetic energy (this increases the oxygen content) to recreate the atmosphere that existed around the Earth many thousands of years ago. The experiments brought interesting results. For example, piranhas, which in our time reach a length of 20–30 centimeters by the age of three and a half, have grown up to half a meter in the pressure chamber! At first glance, this experiment looks convincing, but, alas, other scientists have not yet reproduced it.
In the ancient Sumerian image of the solar system, there is the planet Pluto, discovered by astronomers only in 1930
There is also such a completely fantastic theory explaining the appearance of giants on Earth.
The territory of present-day Iraq is called the cradle of civilization. One of the most ancient among the states known to historians is the Sumerian kingdom, which arose six thousand years ago. The list of inventions of the Sumerians is similar to the list of achievements of our society: the first bicameral parliament, the first written language, the first education system Where did all this come from?
The surviving samples of Sumerian writing say that they were taught by ancient beings who descended from heaven to earth. The Sumerians called them ananoki. The records and drawings that the Sumerians left depict people who came from the planet Nebiru. In many images, they are significantly taller than the average person.
The Berlin Museum houses a very remarkable Sumerian cylinder seal. It depicts three human figures - two are standing, and one is sitting. If we assume that those who are standing are of normal height, then the height of the seated one is about three meters! In addition, in the corner of the seal is depicted of our solar system with the Sun in the center and the planets around it. But the structure of the solar system became known to European science just a little over three hundred years ago! The seal also features the planet Pluto, which was discovered in 1930. And another planet, which the Sumerians called Nebiru, and from where, as they believed, the Ananoki sky giants came.
An ancient Sumerian text tells how, more than 400,000 years ago, the Ananoki flew from space, landed in the Tigris and Euphrates valley and founded a colony, which they called Eden. According to the book of Genesis, in Eden, or Eden, Adam was created from the dust of the earth. However, some researchers adhere to a more “high-tech” theory of the origin of man: supposedly the first people were created using genetic engineering. The genetic material of the ananoks and humanoid creatures that already existed on Earth was taken as the source material. The hybrid eventually became Cro-Magnon, or modern man.
Based on the materials of the Discovery TV channel, prepared
Lyudmila ZAGLADA, "FACTS"
