Please look at the picture I uploaded. Can somebody explain to me how the author of my book can claim that the "vertical component of the ring surface-tension force at the interface in the tube balances the weight of the column of fluid of height h"? This stuff is weird. How can TENSION FORCES which are on the TOP of a column of fluid support the weight of the column? I mean, it's obviously the pressure-difference between the air inside the tube and outside which lifts the water, assuming that the tube is closed on the top.