Open Yourself To Others
by Marcia Lee Jones
Title
Open Yourself To Others
Artist
Marcia Lee Jones
Medium
Photograph - Photography
Description
Sand grains will not stick together unless the sand is reasonably fine. While dry sand is loose, wet sand is adherent if the proper amounts of sand and water are used in the mixture. The reason for this is that water forms little "bridges" between the grains of sand when it is damp due to the forces of surface tension.[1] However, if too much water is added, the water fills the spaces between the grains, breaking down the bridges and thus lowering the surface tension, resulting in the sand being able to flow more easily and the structure collapsing.[1] According to the BBC TV programme Coast, the ideal ratio is eight parts dry sand to one part water[2] (though this may depend on the type of sand). However, recent research has found that the optimal sand-water mix for building sandcastles contains 1% water by volume. (The same researchers also found that it is possible to build sandcastles underwater.)
Uploaded
September 11th, 2013
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Viewed 880 Times - Last Visitor from White Plains, NY on 03/28/2024 at 10:00 PM
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