Is this how the Ancient Egyptians Really Built the Pyramids?




A wall painting discovered in the
ancient tomb
of Djehutihotep could hold the key as to how large blocks were moved by ancient Egyptians

The ancient Egyptians who built the pyramids may have been able to
move massive stone blocks across the desert by wetting the sand in front
of a contraption built to pull the heavy objects, according to a new
study.



Physicists at the University of Amsterdam investigated the
forces needed to pull weighty objects on a giant sled over desert sand,
and discovered that dampening the sand in front of the primitive device
reduces friction on the sled, making it easier to operate. The findings
help answer one of the most enduring historical mysteries: how the
Egyptians were able to accomplish the seemingly impossible task of constructing the famous pyramids.

A wall painting discovered in the
ancient tomb
of Djehutihotep depicts workers pulling a large statue using a sled
   

To make their discovery, the researchers picked up on clues
from the ancient Egyptians themselves. A wall painting discovered in the
ancient tomb
of Djehutihotep, which dates back to about 1900 B.C., depicts 172 men
hauling an immense statue using ropes attached to a sledge. In the
drawing, a person can be seen standing on the front of the sledge,
pouring water over the sand, said study lead author Daniel Bonn, a
physics professor at the University of Amsterdam.

“Egyptologists thought it was a purely ceremonial act,” Bonn told Live Science. “The question was: Why did they do it?” Bonn and his colleagues constructed miniature sleds and experimented with pulling heavy objects through trays of sand. When the researchers dragged the sleds over dry sand, they
noticed clumps would build up in front of the contraptions, requiring
more force to pull them across. Adding water to the sand, however, increased its stiffness, and
the sleds were able to glide more easily across the surface. This is
because droplets of water create bridges between the grains of sand,
which helps them stick together, the scientists said. It is also the
same reason why using wet sand to build a sandcastle is easier than using dry sand, Bonn said. But, there is a delicate balance, the researchers found. “If you use dry sand, it won’t work as well, but if the sand is
too wet, it won’t work either,” Bonn said. “There’s an optimum
stiffness.”

Source Article from http://feedproxy.google.com/~r/AscensionEarth2012/~3/2dKcQEdl8iw/is-this-how-ancient-egyptians-really.html

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