Ancient Egyptians transported pyramid stones over wet sand - dry sand experiment
11.6 هزار بار بازدید -
10 سال پیش
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Physicists from the FOM Foundation
Physicists from the FOM Foundation and the University of Amsterdam have discovered that the ancient Egyptians used a clever trick to make it easier to transport heavy pyramid stones by sledge. The Egyptians moistened the sand over which the sledge moved. By using the right quantity of water they could halve the number of workers needed. The researchers published this discovery online on 29 April 2014 in Physical Review Letters.
In this video, you can see the experiment in which a sledge with a 1 kilogram weight is dragged over dry sand. A pile of sand accumulates in front of the sledge. This is not the case when the sand is dragged over wet sand: Ancient Egyptians transported pyramid...
More information can be found in the press release here: http://www.fom.nl/live/english/news/a...
In this video, you can see the experiment in which a sledge with a 1 kilogram weight is dragged over dry sand. A pile of sand accumulates in front of the sledge. This is not the case when the sand is dragged over wet sand: Ancient Egyptians transported pyramid...
More information can be found in the press release here: http://www.fom.nl/live/english/news/a...
10 سال پیش
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