Geiger–Marsden experiment
E682057
The Geiger–Marsden experiment, also known as the gold foil experiment, was a landmark early 20th-century physics experiment that revealed the existence of a small, dense atomic nucleus and led to the development of the Rutherford model of the atom.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Geiger–Marsden experiment canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T7683754 — 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.
Target entity: Geiger–Marsden experiment Context triple: [Hans Geiger, knownFor, Geiger–Marsden experiment]
-
A.
Davisson–Germer experiment
The Davisson–Germer experiment was a landmark 1927 physics experiment that demonstrated the wave nature of electrons through diffraction from a nickel crystal, providing key evidence for quantum mechanics and wave–particle duality.
-
B.
Franck–Hertz experiment
The Franck–Hertz experiment is a landmark early-20th-century physics experiment that provided direct evidence for the quantization of atomic energy levels, supporting the Bohr model of the atom.
-
C.
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.
-
D.
Meitner–Hahn experiments
The Meitner–Hahn experiments were pioneering nuclear physics investigations in the 1930s that led to the discovery and explanation of nuclear fission in uranium.
-
E.
Cockcroft–Walton experiment
The Cockcroft–Walton experiment was a pioneering 1932 nuclear physics experiment that achieved the first artificial disintegration of atomic nuclei using accelerated protons, confirming Einstein’s mass–energy equivalence.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: Geiger–Marsden experiment Target entity description: The Geiger–Marsden experiment, also known as the gold foil experiment, was a landmark early 20th-century physics experiment that revealed the existence of a small, dense atomic nucleus and led to the development of the Rutherford model of the atom.
-
A.
Davisson–Germer experiment
The Davisson–Germer experiment was a landmark 1927 physics experiment that demonstrated the wave nature of electrons through diffraction from a nickel crystal, providing key evidence for quantum mechanics and wave–particle duality.
-
B.
Franck–Hertz experiment
The Franck–Hertz experiment is a landmark early-20th-century physics experiment that provided direct evidence for the quantization of atomic energy levels, supporting the Bohr model of the atom.
-
C.
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.
-
D.
Meitner–Hahn experiments
The Meitner–Hahn experiments were pioneering nuclear physics investigations in the 1930s that led to the discovery and explanation of nuclear fission in uranium.
-
E.
Cockcroft–Walton experiment
The Cockcroft–Walton experiment was a pioneering 1932 nuclear physics experiment that achieved the first artificial disintegration of atomic nuclei using accelerated protons, confirming Einstein’s mass–energy equivalence.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
landmark experiment in atomic physics
ⓘ
physics experiment ⓘ scattering experiment ⓘ |
| alsoKnownAs |
Rutherford scattering experiment
NERFINISHED
ⓘ
gold foil experiment ⓘ |
| category |
experiments in Rutherford scattering
ⓘ
historical experiments in physics ⓘ |
| conductedBy |
Ernest Marsden
NERFINISHED
ⓘ
Hans Geiger NERFINISHED ⓘ |
| country | United Kingdom ⓘ |
| demonstrated |
most of the atom is empty space
ⓘ
nucleus carries most of the atom’s mass ⓘ nucleus is small compared to atomic size ⓘ |
| detectionTechnique | visual counting of scintillations ⓘ |
| endDate | 1913 ⓘ |
| field |
atomic physics
ⓘ
nuclear physics ⓘ |
| historicalPeriod | early 20th century ⓘ |
| influenced | Bohr model of the atom NERFINISHED ⓘ |
| inspiredBy | Ernest Rutherford NERFINISHED ⓘ |
| keyResult |
discovery of atomic nucleus
ⓘ
evidence that positive charge is concentrated in a small volume ⓘ refutation of the Thomson plum pudding model ⓘ |
| ledTo |
Rutherford model of the atom
NERFINISHED
ⓘ
planetary model of the atom ⓘ |
| location | University of Manchester NERFINISHED ⓘ |
| method |
measurement of scattering angles
ⓘ
use of scintillation screen to detect alpha particles ⓘ |
| namedAfter |
Ernest Marsden
NERFINISHED
ⓘ
Hans Geiger NERFINISHED ⓘ |
| observed |
backscattering of alpha particles
ⓘ
large-angle scattering of alpha particles ⓘ |
| publication | 1909 paper on alpha particle scattering ⓘ |
| significance |
foundation of nuclear physics
ⓘ
provided experimental basis for modern atomic theory ⓘ |
| startDate | 1908 ⓘ |
| supervisedBy | Ernest Rutherford NERFINISHED ⓘ |
| supervisingScientist | Ernest Rutherford NERFINISHED ⓘ |
| supportedModel | nuclear model of the atom ⓘ |
| testedModel | Thomson plum pudding model NERFINISHED ⓘ |
| usedProjectile | alpha particles ⓘ |
| usedSource | radioactive alpha emitter ⓘ |
| usedTarget |
gold foil
ⓘ
thin metal foil ⓘ |
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.
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.
Subject: Geiger–Marsden experiment Description of subject: The Geiger–Marsden experiment, also known as the gold foil experiment, was a landmark early 20th-century physics experiment that revealed the existence of a small, dense atomic nucleus and led to the development of the Rutherford model of the atom.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.