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Why does a surface seem to darken when a liquid falls on it? Example - A road during rains.
(no votes)

Categories: Environment.

Reply	Georg says: Any kind of surface? Or some special surface? Georg Your other question shows that: - its only special surfaces - and You know that (no votes) Tags: physics.
	posted on 2011-01-07 17:44:40 \| Report abuse

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