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Re: Ball bearings used to build Stonehenge
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The Eternal wrote:
but a good theory in terms of the coeficient of friction


Not sure it's even that. Steve Gray, one of the Stonehengineers who used to post here, noted that the Egyptians poured water on sand to make mud to make a highly effective lubricant and he spent a very happy afternoon in a field using a spring scale and pulling a big stone over cowmuck. He reckoned that was more efficient than logs or anything else he could find.


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nigelswift
Posted by nigelswift
19th November 2010ce
08:33

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Re: Ball bearings used to build Stonehenge (The Eternal)

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Re: Ball bearings used to build Stonehenge (The Eternal)

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