What are the mysteries of the Egyptian pyramids?

A pyramid in Egypt was built like this.

The mystery of Egyptian pyramids is the biggest mystery in human history, and its magic far exceeds human imagination.

There are about 65,438+065,438+00 pyramids in Egypt, among which the three pyramids of Giza (the Great Pyramid, the Khafre Pyramid and the Menkar Pyramid) are the most famous, and pyramid of khufu (Cheops) is the largest pyramid in Egypt.

This pyramid covers an area of 13. 1 mu, and is made of nearly 2.6 million huge stones weighing at least 2.5 tons, with a weight of more than 6.25 million tons. Who built such a magnificent project has always been controversial.

Researchers at the University of Amsterdam in the Netherlands said that in order to build the pyramids, the ancient Egyptians had to carry huge stones and statues in the desert. Scientists copied the technology of the ancients at that time and found that wet sand was the key factor in carrying boulders.

The ancient Egyptians put heavy stones on skids, and the workers dragged them in the desert. At present, researchers at the University of Amsterdam have found that it is likely that the ancient Egyptians laid a layer of wet sand in front of the sled.

Experiments show that proper humidity in the sand can provide the traction needed by sledding. To test this theory, physicists built a laboratory version of the Egyptian sleigh.

They found that the moisture content of the required sand determines the traction and hardness of the sand. They use a rheometer to test the hardness of sand and confirm how much traction is needed to deform a certain amount of sand.

Experiments show that the traction required for sledding is inversely proportional to the hardness of sand, and the hardness of wet sand with appropriate humidity is twice that of dry sand. This means that wet sand needs less traction before it is laid on the slide rail, which makes it easier to move the heavy objects on the slide rail. At the same time, the number of sand layers laid is appropriate, and sand accumulation cannot occur before slipping.

It is reported that an ancient Egyptian picture shows that the ancients also knew this skill. In a mural found in Djehutihotep's tomb, a man stood in front of a sled and poured water into the sand in front of it.

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