Michelson rotating mirror experiments
E748499
Michelson rotating mirror experiments were precision optical measurements conducted by Albert A. Michelson to determine the speed of light using rapidly spinning mirrors and long-distance light paths.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Michelson rotating mirror experiments canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8635432 — 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: Michelson rotating mirror experiments Context triple: [Fizeau experiment, followedBy, Michelson rotating mirror experiments]
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
Kennedy–Thorndike experiment
The Kennedy–Thorndike experiment is a classic test of special relativity that examined the constancy of the speed of light using an interferometer with unequal arm lengths and varying laboratory velocity.
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E.
Michelson interferometer
The Michelson interferometer is a precision optical instrument that splits and recombines light beams to measure extremely small differences in path length, widely used in fundamental physics experiments and metrology.
- 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: Michelson rotating mirror experiments Target entity description: Michelson rotating mirror experiments were precision optical measurements conducted by Albert A. Michelson to determine the speed of light using rapidly spinning mirrors and long-distance light paths.
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
Kennedy–Thorndike experiment
The Kennedy–Thorndike experiment is a classic test of special relativity that examined the constancy of the speed of light using an interferometer with unequal arm lengths and varying laboratory velocity.
-
E.
Michelson interferometer
The Michelson interferometer is a precision optical instrument that splits and recombines light beams to measure extremely small differences in path length, widely used in fundamental physics experiments and metrology.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
physics experiment
ⓘ
speed of light measurement ⓘ |
| aim |
determine the speed of light in air
ⓘ
improve precision of speed of light measurements ⓘ |
| basedOn |
Fizeau rotating toothed wheel method
ⓘ
linked to:
Fizeau experiment
|
| contributor | Albert A. Michelson ⓘ |
| field |
optics
ⓘ
physics ⓘ |
| influenced | later optical precision measurements ⓘ |
| inspiredBy | Hippolyte Fizeau ⓘ |
| location |
United States
ⓘ
linked to:
United States of America
|
| mainSubject | speed of light ⓘ |
| measures |
one-way angular displacement of reflected beam
ⓘ
round-trip time of light from phase shift ⓘ |
| notableFor |
high rotational speeds of mirrors
ⓘ
improved accuracy over earlier methods ⓘ use of long-distance light paths ⓘ |
| partOf | historical determinations of the speed of light ⓘ |
| performedBy | Albert A. Michelson ⓘ |
| resultedIn | high-precision value of the speed of light ⓘ |
| usesInstrument |
collimated light source
ⓘ
fixed distant mirror ⓘ rapidly spinning mirror ⓘ telescope ⓘ |
| usesMethod |
long baseline optical path
ⓘ
rotating mirror ⓘ time-of-flight measurement ⓘ |
| usesQuantity |
distance between mirrors
ⓘ
rotation frequency of mirror ⓘ round-trip travel time of 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: Michelson rotating mirror experiments Description of subject: Michelson rotating mirror experiments were precision optical measurements conducted by Albert A. Michelson to determine the speed of light using rapidly spinning mirrors and long-distance light paths.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.