A scientific research institution proposed that wet sand was the key for the ancient Egyptians to carry huge stones and statues in the desert  The researchers pointed out that the ancient Egyptians put heavy stones on the sled, laid a layer of wet sand in front of the sled, and then dragged them  This transportation method had an unexpected effect  In the experiment, the researchers used a rheometer to test the hardness of sand, in order to confirm how much traction force is needed to deform a certain amount of sand  And on this basis, a traction model is designed
A laboratory version of the Egyptian skid was successfully built to simulate the actual situation of the ancient Egyptian construction site.
 It is found that it is easier to move heavy objects when wet sand is laid before the skid, and the water content in the sand determines the hardness and traction force of the sand