Eddington 1919 solar eclipse expedition
E236240
The Eddington 1919 solar eclipse expedition was a landmark astronomical observation campaign that measured the deflection of starlight by the Sun’s gravity, providing the first major empirical confirmation of Einstein’s theory of general relativity.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Eddington 1919 solar eclipse expedition canonical | 1 |
| Eddington experiment | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2125957 — 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: Eddington 1919 solar eclipse expedition Context triple: [general relativity, testedBy, Eddington 1919 solar eclipse expedition]
-
A.
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.
-
B.
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.
-
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.
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.
-
E.
Hafele–Keating experiment
The Hafele–Keating experiment was a 1971 test of Einstein’s theory of relativity in which atomic clocks were flown around the world on commercial airliners and compared with stationary clocks to measure time dilation effects.
- 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: Eddington 1919 solar eclipse expedition Target entity description: The Eddington 1919 solar eclipse expedition was a landmark astronomical observation campaign that measured the deflection of starlight by the Sun’s gravity, providing the first major empirical confirmation of Einstein’s theory of general relativity.
-
A.
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.
-
B.
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.
-
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.
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.
-
E.
Hafele–Keating experiment
The Hafele–Keating experiment was a 1971 test of Einstein’s theory of relativity in which atomic clocks were flown around the world on commercial airliners and compared with stationary clocks to measure time dilation effects.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical observation campaign
ⓘ
scientific expedition ⓘ test of general relativity ⓘ |
| comparedWith | reference star positions taken at night ⓘ |
| confirmedPredictionOf | Einstein's predicted light deflection of about 1.75 arcseconds at the solar limb ⓘ |
| contradictedPredictionOf | Newtonian prediction of about 0.87 arcseconds light deflection ⓘ |
| field |
astrophysics
ⓘ
gravitational physics ⓘ observational astronomy ⓘ |
| hadKeyParticipant |
Andrew Crommelin
ⓘ
Arthur Stanley Eddington ⓘ Frank Watson Dyson ⓘ |
| hadObservationSite |
Principe Island
ⓘ
Sobral ⓘ
surface form:
Sobral, Brazil
|
| hasMainSubject | deflection of starlight by gravity ⓘ |
| ledBy | Arthur Stanley Eddington ⓘ |
| measured | apparent positions of stars near the Sun's limb ⓘ |
| measuredEffect | deflection of starlight by the Sun's gravitational field ⓘ |
| method | astrometric measurement of star positions during totality ⓘ |
| observedFrom |
Principe Island
ⓘ
Sobral ⓘ
surface form:
Sobral, Ceará, Brazil
|
| organizedBy |
Royal Astronomical Society
ⓘ
Royal Observatory, Greenwich ⓘ
surface form:
Royal Greenwich Observatory
|
| providedEvidenceFor |
curvature of spacetime near the Sun
ⓘ
gravitational deflection of light ⓘ |
| relatedEvent |
Museu do Eclipse
ⓘ
surface form:
1919 total solar eclipse
|
| relatedTo | tests of gravitational lensing ⓘ |
| relatedWork |
The Foundation of the General Theory of Relativity
ⓘ
surface form:
Einstein's 1915 paper on general relativity
|
| reportedIn |
Monthly Notices of the Royal Astronomical Society
ⓘ
Philosophical Transactions of the Royal Society ⓘ
surface form:
Philosophical Transactions of the Royal Society A
The Times ⓘ
surface form:
The Times (London)
|
| resultAnnouncedOn | 1919-11-06 ⓘ |
| resultsAnnouncedAt | joint meeting of the Royal Society and the Royal Astronomical Society ⓘ |
| significance |
first major empirical confirmation of general relativity
ⓘ
helped establish Einstein's international fame ⓘ milestone in experimental gravitation ⓘ |
| sponsoredBy |
Royal Astronomical Society
ⓘ
Royal Society ⓘ |
| startDate | 1919-05-29 ⓘ |
| testedTheory |
theory of relativity
ⓘ
surface form:
Albert Einstein's general theory of relativity
|
| tookPlaceDuring | total solar eclipse of 29 May 1919 ⓘ |
| tookPlaceIn |
Atlantic Ocean region
ⓘ
South America ⓘ |
| tookPlaceInContextOf | post-World War I scientific cooperation ⓘ |
| usedInstrument |
astrographic telescope
ⓘ
photographic plates ⓘ |
| usedWavelengthRange | visible light ⓘ |
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: Eddington 1919 solar eclipse expedition Description of subject: The Eddington 1919 solar eclipse expedition was a landmark astronomical observation campaign that measured the deflection of starlight by the Sun’s gravity, providing the first major empirical confirmation of Einstein’s theory of general relativity.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.