Abstract
The capillary rise of liquids was investigated in square capillary tubings of different dimensions (e. g. 300 μm · 300 μm to 1000 μm · 1000 μm) in the temperature range 25° to 35°C.
The data were fitted to an equation:γ=1/2 ·Δϱ ·g · (S · (C ·H/2 +C ·S)) whereγ is the surface tension of the liquid,S is the side length of the square tubing,H is the capillary rise,C (= 1.089) is a capillary constant.
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Birdi, K.S., Vu, D.T., Winter, A. et al. Capillary rise of liquids in rectangular tubings. Colloid & Polymer Sci 266, 470–474 (1988). https://doi.org/10.1007/BF01457265
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DOI: https://doi.org/10.1007/BF01457265