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Old Dec 5th 2018, 12:19 PM   #1
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Capillary action

If liquid rises or falls in a capillary then how can we say liquids seek their own same level
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Old Dec 5th 2018, 09:50 PM   #2
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This is related to your question about surface tension .

Water in a capillary tube rises above the level of the main fluid because the molecular attraction between water and glass is greater than between water and water . For mercury the reverse is true .

liquids seek their own same level is just a general saying which is true on the large scale ... where the liquid contacts the wall of a container , and you look very closely , the saying is not accurate .
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