Article Images Take your classroom into space   'Take Your Classroom into Space' Education Kit Order the Education Kit     'Take Your Classroom into Space' Education Kit Video recording space experiments     On Earth, the capillary effect can be seen in fine tubes containing liquid: surface tension pulls the liquid column up until there is a sufficient mass of liquid for gravity to overcome the intermolecular forces. As the mass of the liquid column is proportional to the square of the tube's diameter, a narrow tube will draw a liquid column higher than a wide tube. In space, many things work differently, but not always. Last update: 16 March 2010