Eötvös experiment
E287397
The Eötvös experiment is a classic physics test of the equivalence principle that measures whether different materials fall with the same acceleration in a gravitational field.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Eöt-Wash experiments | 1 |
| Eötvös experiment canonical | 1 |
| Eötvös torsion balance experiment | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2682844 — 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: Eötvös experiment Context triple: [MICROSCOPE, relatedConcept, Eötvös experiment]
-
A.
Cavendish experiment
The Cavendish experiment was an 18th-century physics experiment by Henry Cavendish that measured the tiny gravitational attraction between lead spheres, allowing the first calculation of the gravitational constant and the mass of the Earth.
-
B.
Ives–Stilwell experiment
The Ives–Stilwell experiment is a classic test of special relativity that measured the relativistic Doppler effect to confirm time dilation for fast-moving ions.
-
C.
Michelson–Morley experiment
The Michelson–Morley experiment was a landmark 1887 physics experiment that attempted to detect the Earth's motion through the hypothesized luminiferous aether and whose null result helped pave the way for Einstein's theory of special relativity.
-
D.
Trouton–Noble experiment
The Trouton–Noble experiment was an early 20th-century test of the luminiferous aether that searched for a torque on a charged capacitor in motion and, by finding no such effect, provided support for the emerging theory of special relativity.
-
E.
Fizeau experiment
The Fizeau experiment was a pioneering 19th-century physics experiment that measured the speed of light using a rotating toothed wheel and helped establish light’s finite velocity.
- 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: Eötvös experiment Target entity description: The Eötvös experiment is a classic physics test of the equivalence principle that measures whether different materials fall with the same acceleration in a gravitational field.
-
A.
Cavendish experiment
The Cavendish experiment was an 18th-century physics experiment by Henry Cavendish that measured the tiny gravitational attraction between lead spheres, allowing the first calculation of the gravitational constant and the mass of the Earth.
-
B.
Ives–Stilwell experiment
The Ives–Stilwell experiment is a classic test of special relativity that measured the relativistic Doppler effect to confirm time dilation for fast-moving ions.
-
C.
Michelson–Morley experiment
The Michelson–Morley experiment was a landmark 1887 physics experiment that attempted to detect the Earth's motion through the hypothesized luminiferous aether and whose null result helped pave the way for Einstein's theory of special relativity.
-
D.
Trouton–Noble experiment
The Trouton–Noble experiment was an early 20th-century test of the luminiferous aether that searched for a torque on a charged capacitor in motion and, by finding no such effect, provided support for the emerging theory of special relativity.
-
E.
Fizeau experiment
The Fizeau experiment was a pioneering 19th-century physics experiment that measured the speed of light using a rotating toothed wheel and helped establish light’s finite velocity.
- F. None of above. chosen
Statements (36)
| Predicate | Object |
|---|---|
| instanceOf |
physics experiment
ⓘ
test of the equivalence principle ⓘ |
| aimsTo | determine whether inertial mass and gravitational mass are proportional ⓘ |
| alsoKnownAs |
Eötvös experiment
ⓘ
surface form:
Eötvös torsion balance experiment
|
| category |
classical mechanics experiment
ⓘ
gravitational experiment ⓘ |
| demonstrates | independence of free-fall acceleration from material composition within experimental limits ⓘ |
| field |
experimental gravitation
ⓘ
gravitational physics ⓘ physics ⓘ |
| hasEffectOn |
bounds on composition-dependent forces
ⓘ
constraints on violations of the equivalence principle ⓘ |
| improvedBy |
Eötvös experiment
self-linksurface differs
ⓘ
surface form:
Eöt-Wash experiments
|
| influenced | development of general relativity ⓘ |
| location | Hungary ⓘ |
| measures |
difference in acceleration of different materials in a gravitational field
ⓘ
possible composition dependence of gravitational acceleration ⓘ |
| method | measure tiny torques on a torsion balance due to differential gravitational acceleration ⓘ |
| namedAfter | Loránd Eötvös ⓘ |
| performedBy |
Loránd Eötvös
ⓘ
Roland von Eötvös ⓘ |
| precision | very high sensitivity to small differences in acceleration ⓘ |
| relatedConcept |
equivalence principle
ⓘ
gravitational mass ⓘ inertial mass ⓘ torsion balance ⓘ universality of free fall ⓘ |
| result | no detectable difference in free-fall acceleration for different materials within experimental accuracy ⓘ |
| supportsTheory |
theory of relativity
ⓘ
surface form:
Einstein's general theory of relativity
|
| tests |
universality of free fall
ⓘ
equivalence principle ⓘ
surface form:
weak equivalence principle
|
| timePeriod |
early 20th century
ⓘ
late 19th century ⓘ |
| usedAs | benchmark for later equivalence principle tests ⓘ |
| uses |
carefully balanced test masses of different composition
ⓘ
torsion balance ⓘ |
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: Eötvös experiment Description of subject: The Eötvös experiment is a classic physics test of the equivalence principle that measures whether different materials fall with the same acceleration in a gravitational field.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
MICROSCOPE
this entity surface form:
Eöt-Wash experiments
this entity surface form:
Eötvös torsion balance experiment