Everyday Science
Materials for rain-proof coats and tents owe their water-proof properties to:
Surface tension
Viscosity
Specific gravity
None of these
Surface tension
Surface tension is the force that causes the surface of a liquid to behave like an elastic membrane. It is this force that allows rain-proof coats and tents to keep water out. When water hits the surface of a rain-proof coat or tent, the surface tension of the water causes it to bead up and roll off. This prevents the water from soaking through the material and getting the person wearing the coat or tent wet.
Surface tension Surface tension is the force that causes the surface of a liquid to behave like an elastic membrane. It is this force that allows rain-proof coats and tents to keep water out. When water hits the surface of a rain-proof coat or tent, the surface tension of the water causes it to bead up and roll off. This prevents the water from soaking through the material and getting the person wearing the coat or tent wet.
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2 responses to “Materials for rain-proof coats and tents owe their water-proof properties to:”
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It’s Surface tension
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corrected
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