viscosity

USAGE SUMMARY

"viscosity" is a correct and usable word in written English.
You can use it to describe the resistance of a liquid or gas to flow, or the thickness of a liquid. For example, "The viscosity of the oil was quite high."

✓ Grammatically correct

News & Media

Encyclopedias

Science

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

A 1930's Martini from the Harry Craddock's classic Savoy Cocktail Book contained 1 part vermouth to 2 parts gin and, though a pleasurable drop, I missed the sheer viscosity of a really gin-heavy Martini.

The Guardian - Lifestyle

"When you draw a material of low viscosity it tends to break up," says Dr Fink.

The Economist

On June 15th the spread hit a record: close to $23 dollars a barrel.For years prices of WTI and Brent were locked together, though the higher-quality American WTI oil generally traded at a premium of a dollar or two to reflect its slightly lower viscosity and sulphur content, which ease refining into petrol, heating oil and other products.

The Economist

Several lines of evidence suggested that the combined forces of surface tension and viscosity were enough to explain how tree frogs stick to surfaces until some frogs were spotted climbing on rocks over which water was flowing.

The Economist

The extent of the delay indicated the viscosity of the fluid, and toe-pad mucus was found to be little more than one-and-a-half times as viscous as water.The more viscous a fluid, the longer it will take to drain away.

The Economist

They calculated the force in question from the contact area of the toe, and found that toe pads were still sticky two minutes after the sliding had stopped, long after the point when, according to their estimate of its viscosity, all the mucus would have drained away.

The Economist

Present thinking suggests that the viscosity of air, on the scale of a bumblebee, allows the insect's small wings to move a relatively large volume of it for their size.

The Economist

An electromagnetic coil inside the piston of the damper creates a magnetic field that adjusts the viscosity of the fluid up to provide continuously variable damping.

The Economist

Such fluids become more viscous when an electric current is applied to them, and changing the viscosity on one side of a root but not the other, using current from the battery, causes the direction of growth to vary.One thing missing from the prototypes is a control system that responds to the root's environment.

The Economist

Both also result in materials that have, in some sense, no resistance in the case of a superfluid, this means zero viscosity and frictionless flow.Like the medicine prize, the chemistry prize was awarded for work that might as easily have come under another heading in this case medicine itself.

The Economist

Like their European counterparts, their fate was sealed by their reliance on relatively expensive "light and sweet" crude, low in sulphur and viscosity, as a feedstock.Their demise has helped European refineries that can process cheaper, heavier grades of oil.

The Economist

Expert writing Tips

Best practice

When discussing "viscosity", specify the temperature or conditions, as it is highly sensitive to these factors. This ensures clarity and precision in your description.

Common error

Avoid assuming that all liquids become more viscous with increasing temperature. While this is true for some substances, others may exhibit the opposite behavior, particularly certain non-Newtonian fluids.

Linguistic Context

The word "viscosity" functions primarily as a noun, representing a property of fluids. As Ludwig AI confirms, it describes the internal friction or resistance to flow. Examples show its use in scientific and technical contexts.

Expression frequency: Very common

Frequent in

Science

35%

Encyclopedias

30%

News & Media

25%

Less common in

Formal & Business

5%

Wiki

3%

Reference

2%

Ludwig's WRAP-UP

In summary, "viscosity" is a noun that refers to the resistance of a fluid to flow. As Ludwig AI points out, it's a valid and frequently used term in written English, particularly in scientific and technical fields. Analysis of the provided examples reveals that it's most commonly found in Science, Encyclopedias, and News & Media. When writing about "viscosity", remember to specify the conditions, as it's sensitive to factors like temperature. Be aware of the inverse relationship between temperature and viscosity, which isn't universally applicable. Considering the contexts, related concepts include "fluid resistance" and "internal friction".

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

resistance to flow

Emphasizes the opposition to movement caused by viscosity.

flow resistance

Emphasizes the opposition to movement caused by viscosity.

fluid resistance

Focuses on the resistance aspect of viscosity, highlighting its impact on fluid movement.

internal friction

Describes the internal forces within a fluid that contribute to viscosity.

thickness of a fluid

Highlights the physical characteristic of fluids that is often associated with viscosity.

fluid's thickness

Highlights the physical characteristic of fluids that is often associated with viscosity.

fluid's consistency

Focuses on the fluid's texture and state, reflecting its viscosity.

degree of stickiness

Connects viscosity to the intuitive concept of how sticky or adhesive a substance is.

tackiness level

Highlights the adhesive property of the fluid, relating to its viscosity.

fluid's density

Highlights the mass per unit volume of fluid, relating to its viscosity.

FAQs

How is "viscosity" measured?

Viscosity is typically measured using instruments called viscometers or rheometers. These devices quantify the resistance of a fluid to flow under controlled conditions. Common units of measurement include Pascal-seconds (Pa·s) and poise (P).

What factors affect the "viscosity" of a fluid?

Several factors can influence viscosity, including temperature, pressure, and composition. Generally, increasing temperature decreases viscosity, while increasing pressure can increase it. The size and shape of molecules within the fluid also play a significant role.

Is there a connection between "viscosity" and a fluid's ability to lubricate?

Yes, viscosity is a critical property of lubricants. The ideal viscosity ensures a sufficient film thickness between moving parts to minimize friction and wear. Too low a viscosity can lead to inadequate lubrication, while too high a viscosity can increase energy consumption.

What's the difference between "viscosity" and "fluidity"?

"Viscosity" refers to a fluid's resistance to flow, while "fluidity" is the measure of how easily a fluid flows. Therefore, fluidity is the reciprocal of viscosity; a fluid with high viscosity has low fluidity, and vice versa.