Image:Poiseuille1.jpg

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[edit] Summary

A conceptual illustration of the viscosity force. Two liquids are moving with different velocities generating a force. The movement is in the x direction and therefore the velocity gradient is Δv_x/Δy

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[edit] Licensing

I, the creator of this work, hereby grant the permission to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. Subject to disclaimers.