Pyramid Construction-Scientists have found the way ancient Egyptians transported boulders

In order to build the pyramids, the ancient Egyptians had to travel through the desert to carry huge rocks and statues. So the ancient Egyptians put these big things on a wooden sled and were pulled by workers ...

FOM, a physicist at the University of Amsterdam in the Netherlands, found that ancient Egyptians used a very ingenious way to transport huge, heavy pyramid stones. The ancient Egyptians wetted the sand. If the proportion of water is right, they can cut their labor by half.

Physicists ' simulations have found that the tensile force needed to move rocks on hard sand is comparable to that of wet sand. They also used a galvanometer to determine the force needed to reinforce the sand. The experiment also shows that the required tensile force is inversely proportional to the degree of hardness of the sand. When the water joins the sand, the capillary bridge rises, and these little drops let the gravel cling to each other. With the participation of a certain proportion of water, moist sand shows twice times the hardness of dry sandy land. At this point, the sled is easier to slide because the sand doesn't pile up on the front of the rock as it does on dry sand.

Left: Pulling slate on dry sand, large piles of sand will accumulate on slate; right: pulling slabs on wet sand can avoid this.

The ancient Egyptians probably mastered the method. A mural in the tomb of the Governor of Ancient Egypt, Jehu Hotep (Djehutihotep), shows a giant statue being transported on a wooden sled, and a man standing in front of a wooden sled is pouring water to moisten the sand.

In addition to revealing the wisdom of ancient Egypt, this study also provides a reference for modern technology. We are not fully aware of the workings of particles such as sand, but it is clear that such particles are everywhere. The transport and processing of particulate materials accounts for 10% of the world's energy consumption, and this study can no doubt be of great use.