equation E = mc^2
E448321
The equation E = mc² is Einstein’s famous mass–energy equivalence formula, expressing that mass and energy are interchangeable and laying a foundation of modern physics and relativity.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Einstein mass–energy equivalence formula | 1 |
| equation E = mc^2 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4508514 — 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: equation E = mc^2 Context triple: [Albert Einstein, knownFor, equation E = mc^2]
-
A.
E=MC²
E=MC² is Mariah Carey's eleventh studio album, a pop and R&B record known for hits like "Touch My Body" and its commercially successful, contemporary sound.
-
B.
Planck–Einstein relation
The Planck–Einstein relation is a fundamental quantum physics formula that links a photon's energy to its frequency, marking a key step in the development of quantum theory.
-
C.
EINSTEIN
EINSTEIN is a U.S. federal intrusion detection and prevention system used to monitor and protect government agency networks from cyber threats.
-
D.
Klein–Gordon equation
The Klein–Gordon equation is a relativistic wave equation that describes spin-0 (scalar) particles in quantum field theory.
-
E.
Dirac equation
The Dirac equation is a fundamental relativistic wave equation in quantum mechanics that describes spin-½ particles such as electrons and predicts phenomena like antimatter.
- 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: equation E = mc^2 Target entity description: The equation E = mc² is Einstein’s famous mass–energy equivalence formula, expressing that mass and energy are interchangeable and laying a foundation of modern physics and relativity.
-
A.
E=MC²
E=MC² is Mariah Carey's eleventh studio album, a pop and R&B record known for hits like "Touch My Body" and its commercially successful, contemporary sound.
-
B.
Planck–Einstein relation
The Planck–Einstein relation is a fundamental quantum physics formula that links a photon's energy to its frequency, marking a key step in the development of quantum theory.
-
C.
EINSTEIN
EINSTEIN is a U.S. federal intrusion detection and prevention system used to monitor and protect government agency networks from cyber threats.
-
D.
Klein–Gordon equation
The Klein–Gordon equation is a relativistic wave equation that describes spin-0 (scalar) particles in quantum field theory.
-
E.
Dirac equation
The Dirac equation is a fundamental relativistic wave equation in quantum mechanics that describes spin-½ particles such as electrons and predicts phenomena like antimatter.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
equation
ⓘ
mass–energy equivalence formula ⓘ physical law ⓘ |
| appearsInWork | Does the Inertia of a Body Depend Upon Its Energy Content? ⓘ |
| appliesTo | inertial reference frames ⓘ |
| assumes |
special relativity postulates
ⓘ
speed of light is constant in vacuum ⓘ |
| category |
Albert Einstein works
ⓘ
equations in physics ⓘ |
| describes | mass–energy equivalence ⓘ |
| field |
physics
ⓘ
relativity ⓘ theoretical physics ⓘ |
| formulatedBy | Albert Einstein ⓘ |
| foundationOf |
modern physics
ⓘ
nuclear physics ⓘ particle physics ⓘ |
| hasConstant | c ⓘ |
| hasForm | E_0 = mc^2 ⓘ |
| hasGeneralization | E^2 = (pc)^2 + (mc^2)^2 ⓘ |
| hasVariable |
E
ⓘ
m ⓘ |
| implies |
energy has an equivalent mass
ⓘ
mass can be converted to energy ⓘ |
| notableFor | iconic status in popular culture ⓘ |
| partOf | special relativity ⓘ |
| publishedIn | Annalen der Physik ⓘ |
| relatedConcept |
conservation of energy
ⓘ
conservation of mass–energy ⓘ relativistic energy ⓘ rest mass ⓘ |
| relatesQuantity |
energy
ⓘ
mass ⓘ speed of light ⓘ |
| statesThat | energy equals mass times speed of light squared ⓘ |
| symbolFor |
E
ⓘ
c ⓘ m ⓘ |
| usedIn |
annihilation processes
ⓘ
astrophysics ⓘ cosmology ⓘ nuclear fission ⓘ nuclear fusion ⓘ |
| usesConstantValue | c ≈ 3.00×10^8 m/s ⓘ |
| usesUnit |
joule
ⓘ
kilogram ⓘ meter per second ⓘ |
| validFor | rest energy ⓘ |
| yearProposed | 1905 ⓘ |
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: equation E = mc^2 Description of subject: The equation E = mc² is Einstein’s famous mass–energy equivalence formula, expressing that mass and energy are interchangeable and laying a foundation of modern physics and relativity.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.