3 ms·
Ball-point pens actually work in space. The ink does now flow because of gravity, it flows because of ink viscosity.
by CrLf 15y ago
Ball-point pens actually work in space. The ink does now flow because of gravity, it flows because of ink viscosity.
- nosse 15y agoYou mean capillary action? http://en.wikipedia.org/wiki/Capillary_action http://en.wikipedia.org/wiki/Capillary_action I think this is somehow linked to viscosity, but I don't seem to find how.