Space/Science — HabitableZone

Space/Science » in reply to Found one of them

An experiment (I just performed)

Place a glass of some liquid at rest so that you can see a light source coming from the other side of it (just a window with reflected light coming through will do). Examine the surface of the liquid in a way that you see the reflected light. This allows you to see the shape of the water surface very well. Observation: the liquid curves up at the edges that are in contact with the glass.

Now the point of this exercise is to demonstrate my (and your?) attitude towards this phenomena: it seems perfectly normal for the liquid surface to be shaped this way.

On the other hand, if you take some water with food coloring in it and dip the end of a capillary tube in it, and watch the liquid climb to the top of the tube, then it seems like you've witnessed something miraculous.

But it is just the same thing happening in both cases.

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