Viscosity refers to the 'thickness' of a fluid as well as its resistance to shear and tensile stresses.
Questions tagged [viscosity]
72 questions
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What is the viscosity of menstruation blood?
I am writing my bachelor thesis about alternative materials for feminine hygiene products and for testing I need to know what the viscosity is of menstruation blood. Can I use water as replacement for menstruation blood because this kind of blood…
Marguérite
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Why does the viscosity of honey decrease when mixed with other viscous fluids?
In order to make honey mustard, I mix honey and mustard. But the resulting mixture is less viscous then both honey and mustard. How does mixing two viscous substances give a less viscous one?
SuperWild1
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Looking for a non-volatile liquid less viscous than water
I have tried searching everywhere for a stable, non-volatile, bio-safe, low viscosity (< .8cST) fluid. Everything I have come across that is low viscosity is inflammable - acetone, ether, silicone oil, fuel, etc.
I have found some confusing things…
viscous boy
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ASTM D2270 Viscosity Index Formula/Table derivation
How was the formula (3) for viscosity index $\mathrm{VI}$ derived in section 5. Procedure A—Oils of Viscosity Index Up to and Including 100 [1]?
Specifically with reference to the reference oils considered and the table for it.
$$\mathrm{VI} =…
Sirius
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What are the fundamental parameter by which lubricants are graded?
I am into hobby machining using an old beaten CNC mill in my garage. Being novice my confidence is rather low and I have genuine fear of breaking something (even ancient CNC machines like mine cost a fortune), so when I got to the part of the users…
Mr. Developerdude
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Increase in Viscocity in Gases with Temperature
Why does viscocity increase with temperature in gases? When they gain kinetic energy, they should be more free right?
Karthik
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Why isn't viscosity considered a property of solids?
Viscosity is defined as a measure of resistance to flow which arises dues to internal friction between layers of fluid as they slip past one another while liquid flows.
Why can't we say that viscosity is a property of solids as well? Except, it…
Jamil Ahmed
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Viscosity of branched vs. linear short alkanes
I was looking through the CRC Handbook of Chemistry and Physics section on liquid viscosities, trying to explain trends in viscosities. In higher alkanes, the viscosity increases with the degree of branching, which is logical. However, I noticed for…
tcmoore3
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Why is honey more viscous than water?
Why is honey more viscous than water? And, if we boil honey to just below its boiling point, will it become equally viscous as water at normal temperature? How does changing temperature affect viscosity?
user21894
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What is meant by viscous liquid?
I think all the liquids are viscous. So I was wondering what is meant by a viscous liquid as it is written in the first line of page on Oil at Wikipedia.
An oil is any neutral, nonpolar chemical substance that is a viscous liquid at ambient…
ankit
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Data sheet for the dynamic viscosity of salt-water-glycerol solutions
Does anyone know where I can get data for the dynamic viscosity of salt-water-glycerol solutions? Specifically 80% glycerol and 20% salt water by mass at 19.2 degrees celsius. Salt concentrations vary between 0 and ~1 mol dm^-3. Anything close is…
gobo
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How to drain engine oil by understanding oil viscocity issues
I asked this on the stackexchange automotive site but didn't get much response perhaps because it entails some chemistry knowledge. I could have asked without mentioning the automotive details however I think it puts the question into context making…
James Wilson
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