Capillary action of water
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Capillary action of water
Capillary action of water in glass tubes. This shows water rising in a narrow glass tube, relative to a wider glass tube. For mercury sinking relative to the outside level of mercury, see image A350/168. The relative rise or fall of a liquid in a narrow glass tube depends on whether the liquid is attracted or repelled by the glass. Water has a positive capillary rise and is drawn up a narrow glass tube. Mercury has a negative capillary rise and sinks down a narrow glass tube, relative to the outside level
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Media ID 6274343
© ANDREW LAMBERT PHOTOGRAPHY/SCIENCE PHOTO LIBRARY
Apparatus Class Room Demonstrating Demonstration Educational Experiment Instrument Positive Rising School Scientific Glass Tube Laboratory Physical
EDITORS COMMENTS
This print from Science Photo Library showcases the intriguing phenomenon of capillary action in water. The image depicts two glass tubes, one narrow and the other wider, with water rising within the former. This mesmerizing display demonstrates how liquids can be drawn up against gravity due to their attraction to certain surfaces. In scientific experiments like this, students are able to witness firsthand the physical properties of different substances and their interaction with materials. This educational apparatus serves as a valuable tool for teachers in classrooms or laboratories, providing an engaging way to explore physics concepts. Capillary action is determined by whether a liquid is attracted or repelled by the material it comes into contact with. In this case, water exhibits positive capillary rise as it ascends through the narrow glass tube. On the other hand, mercury displays negative capillary rise and sinks down when placed in a similar setup. The intricate details captured in this photograph highlight both the beauty and complexity of scientific phenomena. It serves as a reminder that even seemingly simple processes can hold profound significance within our understanding of nature's laws.
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