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Posted on 2/3/15 at 1:38 pm to LSU316
To get things clean, water must penetrate deeply into the fabric. A glance at the water beads on your umbrella shows that water isn’t particularly good at wetting things. The problem is it has a high surface tension, which makes water behave as if it had a thin skin on it. That’s why insects can walk on water.
Washing powders and detergents work to make water wetter by lowering its surface tension.
LOLZ, LOLZ....
geaux edumication
Washing powders and detergents work to make water wetter by lowering its surface tension.
LOLZ, LOLZ....
geaux edumication
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