All TYPING WORK - A clean glass tube having one end into a fine jet is taken. The tube is clamped in a vertical position below the surface of the experimental liquid (water) from the tube AB with the help of Indian rubber joint J. The appara tus is made air tight before proceeding. Now water from the reservoir is allowed to enter B2 at a slow and uniform rate in such a way the successive air bubbles are formed at the orifice of the capillary tube. A difference H in the levels of the manometer is noted This