Ten wonders of the world

/question/ 1 138058 1 . html

1. Egyptian pyramids:

The pyramids are tombs built by the kings of ancient Egypt. The pyramids of Giza in Egypt are considered as one of the seven wonders of the ancient world. Most of the pyramids in Egypt were built in the third and sixth dynasties. These pyramids with a history of more than 4,000 years are mainly distributed in the capital Cairo and Giza on the west bank of the Upper Nile. The pyramids of Giza belong to King Kabra on the left and King Kuff on the right, and there is a sphinx nearby. The main building material is limestone, and some are granite.

2. Statue of Zeus:

Zeus is the god of Greek gods. The statue of Zeus built for worship was the largest indoor statue in the world at that time. The Temple of Zeus, where the statue of Zeus is located, is the birthplace of the Olympic Games, and some Olympic events are held here. The site is located in the ancient city of Olympia on the west coast of Greece.

3.

Fallos lighthouse

The other six wonders of the Fallot Lighthouse are absolutely different, because it has no religious color, and it is built purely for people's real life. The light of the Fallot lighthouse shines all over Alexandria at night, protecting the ships at sea. In addition, it was the tallest building in the world at that time.

4. Hanging Garden:

Like the colossus of Rhodes, archaeologists have not found the remains of the hanging garden so far. In fact, many ancient people mentioned hanging gardens in their works, but they only heard of them from others and never really saw them. Is the hanging garden a pure legend?

5. The Temple of themis:

Themis is the Greek goddess of hunting. Arabs call her Rath, Egyptians call her Isis, and Romans call her Diana. In ancient Greece, themis was deeply worshipped, so he built the Temple of themis, one of the seven wonders.

6. The Colossus of Rhodes:

The colossus of Rhodes is the most mysterious of the ten wonders, because it collapsed in just 56 years, and archaeologists have not even been able to determine its exact location and appearance.

The colossus of Rhodes is located in the port of Rhodes, leading to the Mediterranean Sea. In 305 BC, there was a war between the Federation of Rhodes and Antigone, Malta, and the defeated Federation of Rhodes got a lot of trophies. To commemorate this victory, they sold their trophies and built the colossus of Rhodes.

7. Mausoleum and Temple of Mao Solas:

Mao Solas's Tomb Temple is located in Nassus, Halka, in the southwest of Turkey. Its bottom building is rectangular, with an area of 40m (120ft) by 30m (100ft) and a height of 45m (140ft), in which the pier wall is 20m high and the column is 12m high, and it is a pyramid.

8. Alexandria outside Fallows Lighthouse:

In 332 BC, Alexander the Great of Macedonian Empire established an ancient city-Alexandria, west of the mouth of the Nile River in Egypt. After the death of Alexander the Great, the Ptolemaic dynasty in Egypt began to rise, and Alexandria became the capital of the Ptolemaic dynasty and prospered. Besides, Alexandra has been found.

9. Terracotta Warriors and Horses of Qin Shihuang:

After visiting the Museum of Terracotta Warriors and Horses, foreign heads of state and scholars believe that the discovery of Terracotta Warriors and Horses Pit is not only an important discovery in China, but also an important discovery in the world archaeological history, which can be said to be the eighth wonder in the world. It can be compared with Egyptian pyramids and ancient Greek sculptures, and is recognized as a valuable wealth of human culture in the world.

10 Great Wall of Wan Li, China:

One of the great projects in ancient China. It was built in the Spring and Autumn Period and the Warring States Period (770 ~ 476 BC) and was built by the Ming Dynasty. It starts from Jiayuguan in Gansu in the west and reaches Hushankou on the Yalu River in Dandong, Liaoning in the east, running through Gansu, Ningxia, Shaanxi, Shanxi, Mongolia, Hebei, Liaoning and other places. Along the way, there are Shanhaiguan, Juyongguan, Niangziguan and other checkpoints.

Ten unsolved mysteries of mankind

1. Dream

If you ask 10 people the same question-what causes dreaming, you may get 10 different answers. This is because scientists have not solved the mystery yet. One possibility is to stimulate the information god between brain molecules when dreaming.

Exercise the brain through the keys. There is also a theory that people dream of tasks and emotions that can't be taken care of during the day, and this process can help people consolidate their thoughts and memories. Generally speaking, scientists agree that dreams occur during shallow sleep, which they call rapid eye movement sleep.

sleep

The fruit fly wants to sleep, and so does the tiger. Humans never seem to get enough sleep. What we are discussing here is the topic of sleep. People spend a quarter of their lives sleeping. However, the root cause of sleep is still as puzzling as a dream. But scientists do know an important aspect of sleep: sleep is essential for the survival of mammals. Long-term insomnia can lead to trance, hallucination and eventually death. Two States of sleep-deep sleep (slow eye movement), when brain metabolic activity slows down; Light sleep (when dreaming), during which your brain is active. Some scientists believe that deep sleep can make the body rest and save energy, just like animals hibernate. Light sleep helps to organize what you remember. However, this view has not been confirmed, and dreaming during light sleep is not always related to memory.

Hallucinate

It is estimated that 80% amputees have experienced the feeling of warmth, longing, pressure and pain from amputees. People who have experienced this phenomenon (commonly known as "phantom limb") always feel that the amputated limb still exists. One explanation is that the nerve area of the severed limb reconnects with the spinal cord, and it continues to send signals to the brain as if the severed limb still exists. Another possibility is that the brain is a "hard-wired" transmission, which manipulates the residual body like a perfect body-which means that the brain still retains the blueprint for manipulation under the condition of sound limbs.

4. Task control

The suprachiasmatic nucleus or biological clock in the hypothalamus of the brain makes the body run at a 24-hour rhythm. One of the most obvious results caused by circadian rhythm is the sleep-wake cycle, but the biological clock can also affect digestion, body temperature, blood pressure and hormone production. The researchers found that the biological clock can be adjusted forward or backward by enhancing light and regulating melatonin. Recently, people have been debating whether melatonin can be supplemented to help people prevent jet lag-drowsiness and headache when the plane passes through the time zone.

5. Memory pathway

Some experiences in life are unforgettable, just like your first kiss. But how can one grasp these private scenes? Scientists are using brain imaging technology to try to find out the mechanical reflection of creating and storing memories. They found that the hippocampus inside the gray matter of the brain can act as a memory storage box. But the resolution of this storage area is not strong. Stimulating the same brain region can make it produce true and false memories. In order to distinguish between real memory and false memory, the researchers put forward a method of strengthening memory according to background memory. If something has never really happened, it is difficult to strengthen the memory of the human brain in this way.

Pleasing the brain

Laughter is one of the most difficult behaviors for human beings to understand. Scientists have found that when people laugh, three parts of the brain become active. They are: the area that dominates thinking and tells you jokes; The exercise area makes your muscles move; The emotional area leads to "frivolous" emotions, which makes people smile. But why do some people laugh at my brother's stupid jokes, and some people giggle at horror movies? John Moreel, a pioneer in humor research at William and Mary College, found that laughter is a reflection of very interesting unconventional and incongruous stories. Another view in the field of humor holds that laughter is a way to send a signal that this behavior is "interesting" to others. It can be seen that laughter makes us feel better.

7. Birth and nutrition

Whether our thoughts and personalities are controlled by genes or by the environment has been debated endlessly. Scientists have established a convincing evidence system to prove that it may be controlled by one or two of them. The ability to study a single gene shows that we can't control many characteristics of human beings. However, in many fields, peer pressure or education will have a profound impact on who we are and what we will do.

8. The mystery of death

Long life is something that only happens in Hollywood movies. But why do we get old? When you were born, you were like a dynamic toolbox, full of various mechanisms to fight diseases and repair wounds. Maybe you think these alone can make you resist diseases such as joint stiffness. However, with the growth of age, the body's repair mechanism gradually lost its previous efficacy. In fact, as you get older, your body's ability to recover from trauma and stress is declining. The theory that human aging can be divided into two categories: 1) Like other characteristics of human beings, aging may be a part of human inheritance and beneficial to human beings in some ways. 2) From the most pessimistic point of view, aging is not intentional, and cells are constantly damaged in people's lives, leading to human aging. A large number of researchers believe that science will eventually slow down the pace of aging and make human life expectancy at least twice.

9. Low temperature storage

It may be unrealistic to ask for a long life. But a new field called cryonics will bring some people back to life. Cryopreservation centers, such as Alcor Life Extension Foundation in Arizona, store the dead bodies in bite containers filled with liquid nitrogen at a temperature of minus 320 degrees Fahrenheit (78 degrees absolute). The purpose of this idea is that after finding a cure in the future, people who died of incurable diseases can be brought back to life through thawing. Recently, baseball legend ted williams was kept in a freezer in Alkud. Like other human popsicles, Williams was placed head down. The advantage of this placement is that if the container leaks, the brain can still be stored in cold liquid. So far, the bodies that have not been preserved have been reborn, because the technology of rebirth does not exist yet. For example, if a corpse is not thawed at a proper temperature, human cells will freeze, leading to injury and fragmentation.

consciousness

When you wake up in the morning, you may have realized that the sun has just risen, and you will feel a sense of happiness when you hear some birds chirping happily in the branches, or even when you hear the fresh air brushing your cheeks. In other words, you are conscious. This complex topic has puzzled the scientific community from the beginning. Recently, neuroscientists have regarded consciousness as a realistic research topic.