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CAPILLARY ACTION - A MOVEMENT OF WATER<br />
Capillary Action of Glass Tubes Compared<br />
Water climbs up thin glass tubes because of the strong hydrogen-bonding interactions between water and the oxygen at the surface of the glass (SiO2). The level of water climbs higher in the smaller diameter tube.

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CAPILLARY ACTION - A MOVEMENT OF WATER
Capillary Action of Glass Tubes Compared
Water climbs up thin glass tubes because of the strong hydrogen-bonding interactions between water and the oxygen at the surface of the glass (SiO2). The level of water climbs higher in the smaller diameter tube.

Copyright:© 1990 Chip Clark - Fundamental Photographs

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