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Well actually I just want to ask:
How do we know when the adhesion is stronger than the cohesion, do we just
test? Or if there have some specific ways to get the answer?
And when we do the experiment of capillary action,
we will use capillary tubes and a beaker, and in real
lives, how do we really 'do' the capillary motion without using these apparatus?
Just like well I'm just asking, like there have a bottle of water
and how do we use another substances to permeate into the liquid?
- hlyungLv 71 decade agoFavorite Answer
If the adhesion is stronger than the cohesion, the liquid surface is in concave shape. Otherwise, it is on convex shape.
In fact, you can treat a small gap between the cap and the bottle as a capillary. Another liquid may be able to seep into the water using the principle of capillary action due to different physical properties of these two liquids.