- published: 26 Apr 2012
- views: 136839
The viscosity of a fluid is a measure of its resistance to gradual deformation by shear stress or tensile stress. For liquids, it corresponds to the informal concept of "thickness". For example, honey has a much higher viscosity than water.
Viscosity is a property arising from collisions between neighboring particles in a fluid that are moving at different velocities. When the fluid is forced through a tube, the particles which compose the fluid generally move more quickly near the tube's axis and more slowly near its walls: therefore some stress, (such as a pressure difference between the two ends of the tube), is needed to overcome the friction between particle layers to keep the fluid moving. For the same velocity pattern, the stress required is proportional to the fluid's viscosity.
A fluid that has no resistance to shear stress is known as an ideal or inviscid fluid. Zero viscosity is observed only at very low temperatures in superfluids. Otherwise, all fluids have positive viscosity, and are technically said to be viscous or viscid. In common parlance however, a liquid is said to be viscous if its viscosity is substantially greater than that of water; and may be described as mobile if the viscosity is noticeably less than water. A fluid with a relatively high viscosity, for example, pitch, may appear to be a solid.
What is viscosity? Did you know that every fluid has a unique viscosity? Visit our website: http://www.rheosense.com/what-is-viscosity for more information! Like our video if you liked it and subscribe for more goodies!
Welcome to the seventh episode of season 2 of The Sci Guys. In this episode we will be racing liquids to test the viscosity of liquids. We use multiple liquids in our viscosity of liquids experiment and show you how to set up the liquid viscosity experiment and time our results to see which liquid has the highest viscosity and which has the lowest viscosity. The Viscosity of liquids can affect how they are used in science. Help support us to do more experiments by becoming a patron on patreon: http://www.patreon.com/thesciguys Equipment and Ingredients: Water Rubbing Alcohol Cream Vegetable Oil Olive Oil Lamp Oil Honey Corn Syrup Maple Syrup Dish Soap Long and Shallow Cookie Tray Short and Deep Cooking Tray Small Bowls or Shot Glasses ...
Introduction to the concept of fluid viscosity and its definition in terms of the relationship between shear stress and deformation. This video is part of a series of screencast lectures presenting content from an undergraduate-level fluid mechanics course in the Artie McFerrin Department of Chemical Engineering at Texas A&M; University (College Station, TX, USA). The screencasts have been prepared in 720p HD with accompanying closed captioning for enhanced accessibility. My inspiration for producing this series of videos has been my lifelong personal journey to understand fluid mechanics and explain its beauty to others in a straightforward way. I have received no external support for this project...the effort is purely a labor of love. I would like to acknowledge Aashish Priye and Ja...
Dropping a 100g weight from 80 cm into 8 different beakers of liquid. Testing the 'inner resistance' of each of the liquids or their 'thickness'.
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How to test the Viscosity of a Liquid Experiment In this Video we show you the simple steps to conduct in order to test the viscosity of liquids Enjoy the video! Leave your questions & comments below. Subscribe to Cool Science Experiment HQ on YouTube https://www.youtube.com/c/Coolscienceexperimentshq?sub_confirmation=1 Get the FREE ebook '3 Simple Science Experiment for Kids': http://coolscienceexperimentshq.com/3-simple-science-experiments-for-kids ======================================= Cool Science Experiments HQ - http://coolscienceexperimentshq.com/ Facebook - https://www.facebook.com/CoolScienceHQ FREE Weekly Newsletter: http://coolscienceexperimentshq.com/subscribe ======================================= How to test the Viscosity of a Liquid =================================...
David explains the concept of viscosity, viscous force, and Poiseuille's law. Watch the next lesson: https://www.khanacademy.org/science/physics/fluids/fluid-dynamics/v/turbulence-at-high-velocities-and-reynolds-number?utm_source=YT&utm;_medium=Desc&utm;_campaign=physics Missed the previous lesson? https://www.khanacademy.org/science/physics/fluids/fluid-dynamics/v/fluids-part-12?utm_source=YT&utm;_medium=Desc&utm;_campaign=physics Physics on Khan Academy: Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understandin...
Get your stopwatch ready! Marbles fall at different rates through liquids as the number of OH groups changes. This video is part of the Flinn Scientific Best Practices for Teaching Chemistry Video Series, a collection of over 125 hours of free professional development training for chemistry teachers - http://elearning.flinnsci.com ATTENTION: This demonstration is intended for and should only be performed by certified science instructors in a safe laboratory/classroom setting.