Choose The Substance With The Lowest Viscosity

Viscosity is an important property of many substances that determines their thickness, stickiness, and flowability. In order to understand which substance has the lowest viscosity, it is important to first understand what viscosity is and how it is measured.

What is Viscosity?

Viscosity is the measure of how a liquid or gas resists flow. It is closely related to fluidity, which is the ability of a fluid to move freely or flow. The viscosity of a fluid is determined by its resistance to shear forces. These forces can be created by stirring, stirring plates, or even gravity. The greater the shear forces, the higher the viscosity of the fluid.

Measuring Viscosity

Viscosity can be measured using a variety of methods, including the Brookfield Viscosity Meter, the Couette Viscometer, or the Ostwald Viscometer. Each method measures viscosity differently, but they all have the same goal: to determine the resistance of a fluid to shear forces.

The Lowest Viscosity Substance

The substance with the lowest viscosity is water, which has a viscosity of just 0.00089 Pa.s (Pascal seconds). That means that water will flow freely and easily, even under low shear forces. It also means that water is often used for applications where low viscosity is required, such as hydraulic fluid, paints, and lubricants.

Conclusion

When choosing a substance with the lowest viscosity, water is the obvious choice. It has a viscosity of just 0.00089 Pa.s and will flow easily, even under low shear forces. It is also often used for hydraulic fluid, paints, and lubricants.