About 553,000 results
Open links in new tab
  1. Viscosity - Wikipedia

    When two fluid layers move relative to each other, a friction force develops between them and the slower layer acts to slow down the faster layer. This internal resistance to flow is described by the …

  2. Viscosity | Definition, Facts, Formula, Units, & Examples | Britannica

    Nov 21, 2025 · What is viscosity? Viscosity is the resistance of a fluid (liquid or gas) to a change in shape or movement of neighbouring portions relative to one another. Viscosity denotes opposition to …

  3. Viscosity: Definition, Examples, and Formula - Science Facts

    Oct 18, 2024 · Viscosity is a physical quantity that describes a fluid’s resistance to flow. It is a property that resists the relative displacement of the different layers of the fluid.

  4. Viscosity: Why Liquids Resist Flow and the Role of Intermolecular Forces

    Learn how viscosity measures a liquid’s resistance to flow, why “thick” liquids like syrup move slowly, and how intermolecular forces and molecular structure impact flow rate.

  5. Viscosity – The Physics Hypertextbook

    Informally, viscosity is the quantity that describes a fluid's resistance to flow. Formally, viscosity is the ratio of shearing stress to velocity gradient.

  6. What is Viscosity? - GeeksforGeeks

    Jul 23, 2025 · Viscosity refers to a fluid's resistance to flow, indicating how easily it deforms or changes shape when exposed to stress. A high viscosity means the fluid flows slowly, such as honey, …

  7. Viscosity: Definition, Formula, SI Unit & Examples for Physics 2025

    Viscosity is a physical property that describes a fluid's resistance to flow or to a change in shape. It represents how much internal friction occurs between different layers of a fluid when they move …

  8. VISCOSITY Definition & Meaning - Merriam-Webster

    The meaning of VISCOSITY is the quality or state of being viscous : a sticky or glutinous consistency. How to use viscosity in a sentence.

  9. What is Viscosity? - BYJU'S

    In this article, you will learn what viscosity is, how it is measured, and the viscosity equation of a fluid. You’ll also explore the reasons why viscosity is important.

  10. Viscosity: Core Concepts in Fluid Mechanics Engineering

    Viscosity describes how thick or sticky a fluid is, reflecting its internal friction when layers slide past each other. A low-viscosity fluid, like water, flows easily, while a high-viscosity fluid, like oil, resists motion.