Stokes' law
E155869
Stokes' law is a fundamental equation in fluid dynamics that describes the drag force experienced by small spherical particles moving slowly through a viscous fluid.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Stokes' law canonical | 3 |
| Stokes law | 1 |
| Stokes' law of viscosity | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1367416 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Stokes' law Context triple: [George Gabriel Stokes, knownFor, Stokes' law]
-
A.
Stokes–Einstein relation
The Stokes–Einstein relation is a fundamental equation in statistical physics that links the diffusion coefficient of a particle in a fluid to its size, the fluid’s viscosity, and temperature.
-
B.
Stokes flow
Stokes flow is a type of fluid motion dominated by viscous forces and characterized by very low Reynolds numbers, where inertial effects are negligible.
-
C.
On the Motion of Small Particles Suspended in Liquids at Rest Required by the Molecular-Kinetic Theory of Heat
"On the Motion of Small Particles Suspended in Liquids at Rest Required by the Molecular-Kinetic Theory of Heat" is Albert Einstein’s 1905 paper that provided a theoretical explanation of Brownian motion, offering strong evidence for the existence of atoms and molecules.
-
D.
Newtonian fluids
Newtonian fluids are idealized fluids whose viscosity remains constant regardless of the applied shear rate, leading to a linear relationship between shear stress and strain rate.
-
E.
Lorentz–Lorenz equation
The Lorentz–Lorenz equation is a fundamental relation in optics and electromagnetism that connects a material’s refractive index to its molecular polarizability and density.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Stokes' law Target entity description: Stokes' law is a fundamental equation in fluid dynamics that describes the drag force experienced by small spherical particles moving slowly through a viscous fluid.
-
A.
Stokes–Einstein relation
The Stokes–Einstein relation is a fundamental equation in statistical physics that links the diffusion coefficient of a particle in a fluid to its size, the fluid’s viscosity, and temperature.
-
B.
Stokes flow
Stokes flow is a type of fluid motion dominated by viscous forces and characterized by very low Reynolds numbers, where inertial effects are negligible.
-
C.
On the Motion of Small Particles Suspended in Liquids at Rest Required by the Molecular-Kinetic Theory of Heat
"On the Motion of Small Particles Suspended in Liquids at Rest Required by the Molecular-Kinetic Theory of Heat" is Albert Einstein’s 1905 paper that provided a theoretical explanation of Brownian motion, offering strong evidence for the existence of atoms and molecules.
-
D.
Newtonian fluids
Newtonian fluids are idealized fluids whose viscosity remains constant regardless of the applied shear rate, leading to a linear relationship between shear stress and strain rate.
-
E.
Lorentz–Lorenz equation
The Lorentz–Lorenz equation is a fundamental relation in optics and electromagnetism that connects a material’s refractive index to its molecular polarizability and density.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
law of fluid dynamics
ⓘ
physical law ⓘ |
| appliesTo |
creeping flow
ⓘ
laminar flow ⓘ low Reynolds number flow ⓘ small spherical particles ⓘ |
| approximationOf | solution of Navier–Stokes equations for creeping flow around a sphere ⓘ |
| assumes |
Newtonian fluid
ⓘ
Reynolds number much less than 1 ⓘ incompressible fluid ⓘ isolated particle (no interactions) ⓘ no-slip boundary condition at particle surface ⓘ steady flow ⓘ |
| describes | drag force on a sphere in a viscous fluid ⓘ |
| field |
continuum mechanics
ⓘ
fluid dynamics ⓘ rheology ⓘ |
| gives | drag force F = 6 π μ r v ⓘ |
| historicalPublicationYear | 1851 (derivation by George Gabriel Stokes) ⓘ |
| limitation |
assumes rigid, perfectly spherical particles
ⓘ
does not account for particle-particle interactions ⓘ does not account for turbulence ⓘ inaccurate at moderate or high Reynolds numbers ⓘ |
| namedAfter |
George Stokes
ⓘ
surface form:
George Gabriel Stokes
|
| parameter |
dynamic viscosity μ
ⓘ
particle radius r ⓘ particle speed v ⓘ |
| relatedTo |
Navier–Stokes equations
ⓘ
Reynolds number ⓘ Stokes flow ⓘ drag coefficient ⓘ terminal velocity ⓘ |
| relates |
drag force to fluid viscosity
ⓘ
drag force to particle radius ⓘ drag force to particle velocity ⓘ |
| usedFor |
determining terminal settling velocity of particles
ⓘ
particle size estimation ⓘ viscosity measurement ⓘ |
| usedIn |
aerosol physics
ⓘ
biophysics ⓘ chemical engineering ⓘ colloid science ⓘ environmental engineering ⓘ sedimentation analysis ⓘ |
| validWhen |
flow is laminar
ⓘ
particle motion is slow ⓘ particle size is small compared to characteristic length scales of flow ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Stokes' law Description of subject: Stokes' law is a fundamental equation in fluid dynamics that describes the drag force experienced by small spherical particles moving slowly through a viscous fluid.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
George Gabriel Stokes
subject surface form:
George Gabriel Stokes
this entity surface form:
Stokes' law of viscosity
subject surface form:
George Gabriel Stokes
this entity surface form:
Stokes law