The architectural structure of Egyptian pyramids.

On September 13, 2002, Fox Company of the United States and National Geographic Channel presented a two-hour program to the audience through television broadcast, mainly introducing the main performance of a robot named "Pyramid Rover", especially the situation photographed after it climbed into a mysterious passage of the Great Pyramid of Egypt. This passage has a cross-sectional area of 9 square inches (equivalent to 58 square centimeters) and is located about 246 feet (equivalent to 65 meters) above the south wall of the Queen's coffin parking room of the Great Pyramid. At the bottom of this passage is a slate with two copper handles on it. What is hidden behind this slate is still unknown. However, this time, after the robot entered through the tunnel, the photographed situation may let us know more about this great pyramid near the Giza Plateau. Since 1872, these mysterious passages on the wall of the Great Pyramid in Egypt were discovered, people have made various speculations about their origins. One theory is that they are vents, which provide air for workers who build the internal facilities of the pyramids. However, if this statement is true, then why did you seal the hole with just the right stone seal before the project was completed? Besides, why don't they show holes on the surface of the pyramid? Another way of saying this is that there is a secret tomb behind the stone slabs of these passages. There is also an old saying that these channels are called "constellation channels" because their openings seem to point in the direction of Canis Canis and Orion. Perhaps the purpose of the building was to guide the Pharaoh's soul to heaven. However, this theory was partially refuted by Rudolf Gantenbrink, an engineer who worked in the German Archaeological Association in 1993. He made a small robot, let it climb into these channels, and then through the photos taken by the robot, he found that these channels were curved, so they would not point to any particular constellation. However, the possibility that these channels were originally designed as "soul channels" cannot be ruled out. Archaeologists have been eager to know more about these passages since the robots in Gandy Brook discovered the slates in these passages. Egypt finally agreed to an expedition led by Mark Lerner, an archaeologist at the University of Chicago, and Zahi Hawass, an explorer of the National Geographic Society and chairman of the Egyptian Monuments Committee, to inspect these passages. The robot used this time is produced by a robot manufacturing company separated from MIT. Robots can climb up the tunnel and attach to the floor and ceiling. When it reaches the slate in the passage, it will send out a test battery. A special radar system installed on the plane will detect whether there is a secret room inside. If it detects a hidden tomb, it will stretch out a miniature fiber-optic video recorder, which can be inserted into any crack in the slate to take a look at the history that was secretly preserved as early as 4,500 years ago. In addition, when the robot pushes the slate, if the slate moves, the pressure gauge installed on the robot will feel something. If the slate does not move, the current detector installed on the robot will detect whether there are other copper substances on the other side of the slate through the copper handle on the slate. If current passes, the current detector will know the length of bronze by measuring the resistance. The robot is also equipped with an ultrasonic system, which will measure the thickness of the stone on the channel wall and the thickness of the slate at the bottom of the channel.

Edit the construction reason of this part.

The construction time of the Egyptian pyramids: about 2700-2500 BC (this is an accepted statement). Construction site: the Giza Plateau near Cairo, Egypt, which is one of the eight most familiar wonders. Pharaoh is the king of ancient Egypt, and the pyramid is the tomb of Pharaoh. Why did Pharaoh build the pyramids? How were the huge pyramids built? Some people say that the pyramids were built by aliens. What is the truth? According to legend, before the third dynasty in ancient Egypt, both princes and ministers and ordinary people were buried in a rectangular tomb made of mud bricks, which the ancient Egyptians called "Mastaba". Later, a clever young man named Imhotep invented a new building method when designing a mausoleum for the Egyptian Pharaoh Zuosai. He replaced the mud brick with the square stone he picked from the mountain, constantly revised the design scheme of building the mausoleum, and finally built a six-story trapezoidal pyramid-this is the prototype of the pyramid we see now. In ancient Egypt, the pyramids were trapezoidal and layered, so they were also called hierarchical pyramids. This is a tall pyramid building with a square base and a triangle on each side, which looks like golden Chinese characters, so we call it; "Pyramid" The tower-shaped mausoleum designed by Imhotep is the first stone mausoleum in Egyptian history. After King Zuo Sai, the Egyptian Pharaoh followed his example and built a mausoleum for himself before he died. Since then, ancient Egypt has set off a wind to build pyramids. Because the pyramids originated in the ancient kingdom period, and the largest pyramid, pyramid of khufu, was built in this period, the ancient kingdom period of Egypt is also called the pyramid era. Why did the pharaohs of ancient Egypt build the mausoleum into the shape of a pyramid, which is the golden shape in Chinese characters? It turns out that at the earliest time, the pharaohs in Egypt prepared to use Mastaba as their permanent residence after death. Later, during the second and third dynasties, the Egyptians came up with the idea that the king would become a god and his soul would ascend to heaven after his death. In the inscription of the pyramid later discovered, there is a sentence like this: "Build a ladder for him (Pharaoh) so that he can go to heaven from there." The pyramid is such a ladder. At the same time, the pyramid shape also expresses the worship of the sun god, because the symbol of the ancient Egyptian sun god "La" is the light of the sun. The pyramid symbolizes the sunlight that penetrates the sky. Because, when you stand on the road to Kize and look west from the perspective of the pyramid ridge, you can see that the pyramid shines on the earth like the sun.

Edit this paragraph structure

There is a sentence in the inscription of the pyramid: "The sky extends its own light to you, so that you can climb into the sky, just like pulling your eyes." Later, the worship of the obelisk by ancient Egyptians also had such significance, because the obelisk also represented the light of the sun. The largest of all the pyramids in ancient Egypt is the pyramid of the fourth dynasty Pharaoh Khufu. The original height of the Great Pyramid was 146.59 meters. After thousands of years of wind and rain, the top of the Great Pyramid has been eroded by nearly 10 meter, but it was the tallest building in the world until the Eiffel Tower was built in Paris in 1888. The bottom of this pyramid is square, each side is more than 230 meters long, and it takes almost one kilometer to walk around the pyramid. Among the pyramids that have been discovered in Egypt, the largest and most famous is the third generation pyramid located in the Giza Plateau in the southwest of Cairo. They are the Great Pyramid (also known as pyramid of khufu), the Khafre Pyramid and the Menkoala Pyramid. They form a pyramid group, surrounded by many small golden pagodas, which are the pinnacle of Egyptian pyramid architecture. The Great Pyramid is the largest existing pyramid in Egypt and is known as "one of the seven ancient wonders of the world". It was built during the reign of the second Pharaoh Khufu of the fourth dynasty in Egypt (about 2670 BC). The original height was 146.59 m, but now it is 136.5 m due to the peeling of the top. The four inclined planes of the tower face the southeast and northwest directions respectively. The tower foundation is square, each side is about 230 meters long and covers an area of 52,900 square meters. The tower consists of 2.3 million boulders with different sizes, ranging from 1.5 tons to 160 tons, with an average weight of about 2.5 tons. According to research, it took 65438+ ten thousand people 30 years to build the Great Pyramid. 1989 March 16, Egyptian archaeologists excavated the mummy of an ancient Egyptian princess 4,400 years ago in a shallow pit at the bottom of a pyramid in the pyramid area of southwest Cairo. The second largest pyramid is the tomb of Ha Fula, the fourth Pharaoh of the fourth dynasty in ancient Egypt (about 2575-2465 BC), so it is called the Hafra Pyramid, with a tower height of 143.5 meters. The world-famous Sphinx is next to the pyramid of Hafra. It is said that this face is an imitation of Ha Fula. For a long time, due to the excessive humidity and poor ventilation in the pyramid, cracks appeared in the walls of the tomb. 1992, the Havla Pyramid experienced another earthquake with a magnitude of 5.4, which was partially damaged. After more than two years of comprehensive transformation, it was reopened in July 20001year. The base of the Menkoala Pyramid is108.5m long and the tower is 66.5m high. 1839, an English explorer opened the pyramid for the first time and found a granite sarcophagus and Pharaoh's mummy in the tomb. However, the ship carrying these cultural relics encountered an accident on the way back to England, and the sarcophagus and mummy sank into the Atlantic Ocean. At the beginning of 1993, when archaeologists were inspecting the pyramid area in Giza province, they accidentally discovered a large-scale ancient tomb group with more than 160 ancient tombs. The hieroglyphics in the tombs record the situation when the pyramids were built. There are paintings on the tomb wall, which vividly show the situation when the pyramids were built. These ancient tombs have different shapes and materials. Some tombs are pyramid-shaped, some are circular arches, and some are rectangular flat-topped slopes. There are three main materials: adobe, basalt and granite. In order to further study the newly discovered ancient tombs, the Egyptian Ministry of Culture has set up a scientific research team, and the mystery about the pyramid builders will be further revealed. 1In July 1996, Egypt decided to open four pyramids in Dashur, about 35 kilometers south of Cairo. Two of these four pyramids were built nearly 4,600 years ago for Pharaoh Safro of the fourth dynasty in ancient Egypt. One of them has a unique shape, which is called "curved pyramid" or "corner pyramid". Its bottom is square, with a side length of188m and a height of about 98m. It is unique in that there are two slopes on each side. Archaeologists found that when the ancient Egyptians built it, they first built it with an inclination of 54 degrees. After reaching a certain height, they continued to build at an inclination of 43 degrees until completion. So the four sides of the pyramid look curved. Another pyramid built for King Safro is made of red limestone, so it is called "Red Pyramid". 1In August, 1996, when Egyptian archaeologists were cleaning the base of the Menkoala pyramid near the Giza pyramid in the southwest of Cairo, they stumbled upon two rare stone statues of Ramses II, which was the first time to find cultural relics related to Ramses II in the pyramid highlands. These two newly discovered stone statues are located next to the koala pyramid, the third largest pyramid gate. They are carved on the same stone, 3.5 meters high and weighing about 4 tons. One of them reflects the true face of Ramses II, and the other combines the statues of Ramses II and Horatio. Ramses II was a famous Pharaoh in ancient Egypt 19 dynasty (about BC 1304-BC 1237). The pyramids of Giza belong to the cultural relics of the ancient Egyptian kingdom (3200-2270 BC), while Ramses II lived in the new Egyptian kingdom (1560-100 BC). Archaeologists believe that this important discovery may help people reveal more secrets in the pyramid area. In recent ten years, a large number of tourists visited the pyramids, which led to the rising humidity and the increase of chemicals in the pyramids, which destroyed the firmness of the pyramids. In order to better protect this precious monument, the Egyptian government announced 1995 as the year of pyramid protection in April. The Egyptian pyramids developed from the early tomb of Mastaba. The history of architectural pyramids spanned 10 dynasties from the third dynasty to the thirteenth dynasty. The pyramids shine with the wisdom and strength of the ancient Egyptians. Until today, the pyramids with large scale, magical architecture and magnificent momentum still leave many unsolved mysteries. The mysterious Egyptian pyramids have attracted many scientists, archaeologists and historians to explore and countless tourists from all over the world to visit.