Capillary action of mercury
Wall Art and Photo Gifts from Science Photo Library
Capillary action of mercury
Capillary action of mercury in glass tubes. This shows mercury sinking in a narrow glass tube, relative to a wider glass tube. For water rising relative to the outside level of water, see image A350/167. 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 6274379
© ANDREW LAMBERT PHOTOGRAPHY/SCIENCE PHOTO LIBRARY
Apparatus Class Room Demonstrating Demonstration Educational Experiment Instrument Mercury Negative School Scientific Sinking Glass Tube Laboratory Physical
EDITORS COMMENTS
This print from Science Photo Library showcases the intriguing phenomenon of capillary action in mercury. The image depicts two glass tubes, one narrow and the other wider, filled with mercury. As we observe closely, we can witness the mesmerizing sight of mercury sinking in the narrow tube while remaining at a relatively higher level in the wider tube. Capillary action refers to how liquids behave when they come into contact with a solid surface, such as glass. In this case, we see that mercury exhibits a negative capillary rise – it is repelled by the glass and thus sinks down within the narrow tube. This stark contrast to water's positive capillary rise (as shown in another image) demonstrates how different liquids interact differently with their surroundings. This scientific demonstration serves as an educational tool for students studying physics or engaging in laboratory experiments. It highlights the importance of understanding physical properties and interactions between substances. The apparatus featured here allows learners to visually grasp concepts related to capillary action and explore its implications. With its clear depiction of this fascinating scientific concept, this print is an invaluable addition to any classroom or laboratory setting where knowledge about capillary action is being imparted or explored further.
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