Viscosity, Specific Gravity & Density

In summary, viscosity is a measure of a fluid's resistance to flow and is influenced by various factors. It is typically measured using a viscometer. Specific gravity, on the other hand, is a measure of a substance's density compared to water. It is calculated by dividing the density of a substance by the density of water and is often expressed as a decimal or a ratio. While density and specific gravity are closely related, they are not the same and can be used to identify and compare different materials.
  • #1
MrWinesy
9
0
What are the relationships between these 3 properties of a fluid and how would you calculate say the density when you know the viscosity and specific gravity?
 
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  • #2
Viscosity is a measure of "thickness" of the fluid. It's a resistance to shear deformation. Specific gravity is the ratio of the fluid's density over water's density. And density is just the ratio of mass to volume. To calculate density, just use the specific gravity and multiply by water's density.
 
  • #3
taah
 

Related to Viscosity, Specific Gravity & Density

1. What is viscosity?

Viscosity is a measure of a fluid's resistance to flow. It is the thickness or stickiness of a fluid, and is influenced by factors such as temperature, pressure, and composition.

2. How is viscosity measured?

Viscosity is typically measured using a viscometer, which measures the time it takes for a fluid to flow through a tube of a specific size and shape. The higher the viscosity, the longer it takes for the fluid to flow through the tube.

3. What is specific gravity?

Specific gravity is the ratio of the density of a substance to the density of a reference substance, usually water. It is a measure of how dense a substance is compared to water, with a specific gravity of 1 meaning it is equal to the density of water.

4. How is specific gravity calculated?

Specific gravity is calculated by dividing the density of a substance by the density of water. It is often expressed as a decimal or a ratio, with pure water having a specific gravity of 1. For example, if a substance has a density of 2 g/mL, its specific gravity would be 2/1 or 2.

5. What is the relationship between density and specific gravity?

Density and specific gravity are closely related, but they are not the same. While density is an absolute measure of a substance's mass per unit volume, specific gravity is a relative measure of a substance's density compared to water. However, both are measures of how tightly packed the molecules of a substance are and can be used to identify and compare different materials.

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