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Friday, May 2, 2014

Scientists Discovered the Egyptian Secret to Moving Huge Pyramid Stones

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The question of just how an ancient civilization—without the help of modern technology—moved the 2.5 ton stones that made up their famed pyramids has long plagued Egyptologists and mechanical engineers alike. But now, a team from the University of Amsterdam believes they've figured it out, even though the solution was staring them in the face all along.

Scientists Discovered the Egyptian Secret to Moving Huge Pyramid Stones

It all comes down to friction. See, the ancient Egyptians would transport their rocky cargo across the desert sands, from quarry to monument site with large sleds. Pretty basic sleds, basically just large slabs with upturned edges. Now, when you try to pull a large slab with upturned edges carrying a 2.5 ton load, it tends to dig into the sand ahead of it, building up a sand berm that must then be regularly cleared before it can become an even bigger obstacle.

Wet sand, however, doesn't do this. In sand with just the right amount of dampness, capillary bridges—essentially microdroplets of water that bind grains of sand to one another through capillary action—form across the grains, which doubles the material's relative stiffness. This prevents the sand from berming in front of the sled and cuts the force required to drag the sled in half. In half.

As a UvA press release explains,
The physicists placed a laboratory version of the Egyptian sledge in a tray of sand. They determined both the required pulling force and the stiffness of the sand as a function of the quantity of water in the sand. To determine the stiffness they used a rheometer, which shows how much force is needed to deform a certain volume of sand.

Experiments revealed that the required pulling force decreased proportional to the stiffness of the sand...A sledge glides far more easily over firm desert sand simply because the sand does not pile up in front of the sledge as it does in the case of dry sand.
These experiments served to confirm what the Egyptians clearly already knew, and what we probably already should have. Artwork within the tomb of Djehutihotep, which was discovered in the Victorian Era, depicts a scene of slaves hauling a colossal statue of the Middle Kingdom ruler and in it, a guy at the front of the sled is shown pouring liquid into the sand. You can see it in the image above, just to the right of the statue's foot.

We can now finally put this scientific snipe hunt to rest and focus on how the hell Stonehenge got that way.

Source: Gizmodo

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  1. That is all good and well, but where did they get enough water or liquid to pour for the entire journey? Also, carrying that much liquid would add a lot of extra weight to what they were pulling.

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  2. Awesome. Now explain how they lifted these 2.5 ton blocks...

    1. Actually those blocks were around 12 to 70 tons

  3. Ha ha, ok, what about all the blocks that weighed, 40 tons? And 60? 70 tons? And what about 500 tons, or 1300 ton obelisks and statues? These "scientists" aren't even familiar with the architecture and components that makes up the entire structure is seems.

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  6. Getting a job as a scientists at that university should be easy for my preschool brother


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