The Capillary Cup is a zero-gravity cup designed by NASA astronaut Donald Pettit on the International Space Station. The product is an open drinking cup designed to be used in a microgravity ...
IF a capillary tube, A, Fig ... is lowered slowly into water the rising column of water pauses for an instant when it reaches the gap, which is necessarily higher than the surface of the water ...
There is no net movement of water in any direction as the concentration is equal on both sides so the level of water in the capillary tube remains the same.
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