Faraday cage
E107234
A Faraday cage is an enclosure made of conductive material that blocks external static and non-static electric fields, protecting its interior from electromagnetic interference.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Faraday cage canonical | 2 |
| Faraday ice pail effect | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T908010 — 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: Faraday cage Context triple: [Michael Faraday, knownFor, Faraday cage]
-
A.
Palace of Electricity
The Palace of Electricity was a grand exhibition hall at the 1904 Louisiana Purchase Exposition in St. Louis that showcased cutting-edge electrical technologies and illuminated displays.
-
B.
Wardenclyffe Tower project
The Wardenclyffe Tower project was Nikola Tesla’s ambitious early-20th-century attempt to build a wireless transmission station for global communication and power distribution.
-
C.
Alderson disk
An Alderson disk is a hypothetical megastructure consisting of a gigantic, flat disk-shaped habitat encircling a star, proposed as an extreme example of astroengineering and space-based living space.
-
D.
Einstein–Szilard refrigerator
The Einstein–Szilard refrigerator is an early 20th-century absorption refrigerator design that uses no moving parts and was created to provide a safer, more reliable alternative to conventional refrigerators that relied on toxic gases.
-
E.
Green Dome
The Green Dome is the iconic green-colored dome in Medina that marks the resting place of the Prophet Muhammad within Al-Masjid an-Nabawi.
- 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: Faraday cage Target entity description: A Faraday cage is an enclosure made of conductive material that blocks external static and non-static electric fields, protecting its interior from electromagnetic interference.
-
A.
Palace of Electricity
The Palace of Electricity was a grand exhibition hall at the 1904 Louisiana Purchase Exposition in St. Louis that showcased cutting-edge electrical technologies and illuminated displays.
-
B.
Wardenclyffe Tower project
The Wardenclyffe Tower project was Nikola Tesla’s ambitious early-20th-century attempt to build a wireless transmission station for global communication and power distribution.
-
C.
Alderson disk
An Alderson disk is a hypothetical megastructure consisting of a gigantic, flat disk-shaped habitat encircling a star, proposed as an extreme example of astroengineering and space-based living space.
-
D.
Einstein–Szilard refrigerator
The Einstein–Szilard refrigerator is an early 20th-century absorption refrigerator design that uses no moving parts and was created to provide a safer, more reliable alternative to conventional refrigerators that relied on toxic gases.
-
E.
Green Dome
The Green Dome is the iconic green-colored dome in Medina that marks the resting place of the Prophet Muhammad within Al-Masjid an-Nabawi.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
electrical enclosure
ⓘ
electromagnetic shielding device ⓘ |
| affectedBy |
aperture size relative to wavelength
ⓘ
conductivity of material ⓘ frequency of incident electromagnetic waves ⓘ thickness of conductive material ⓘ |
| basedOnPrinciple |
Gauss’s law
ⓘ
surface form:
Gauss's law
electrostatic equilibrium in conductors ⓘ electrostatic shielding ⓘ |
| composedOf | conductive material ⓘ |
| fieldOfUse |
communications security
ⓘ
electrical engineering ⓘ electromagnetic compatibility ⓘ physics education ⓘ |
| hasExample |
metal body of a car
ⓘ
metal mesh enclosure ⓘ metal shell of an airplane cabin ⓘ screened RF test chamber ⓘ shielded room ⓘ solid metal box ⓘ wire mesh around laboratory equipment ⓘ |
| hasProperty |
blocks external electric fields
ⓘ
blocks external non-static electric fields ⓘ blocks external static electric fields ⓘ charges reside on outer surface of conductor ⓘ electric field inside ideal cage is zero ⓘ encloses a region of space ⓘ interior is electrically isolated from external fields ⓘ provides electromagnetic shielding ⓘ reduces electromagnetic interference ⓘ |
| limitation |
does not perfectly block low-frequency magnetic fields
ⓘ
effectiveness reduced by large openings ⓘ requires proper grounding for some applications ⓘ |
| materialExample |
aluminum
ⓘ
conductive mesh ⓘ copper ⓘ steel ⓘ |
| namedAfter | Michael Faraday ⓘ |
| requires |
continuous conductive path
ⓘ
electrical connection between cage elements ⓘ |
| usedFor |
EMC testing environments
ⓘ
lightning protection for structures and vehicles ⓘ microwave oven containment of microwave radiation ⓘ preventing eavesdropping via electromagnetic emissions ⓘ protecting RFID cards from unauthorized scanning ⓘ protecting electronic devices from EMP ⓘ protecting electronic equipment from electromagnetic interference ⓘ protecting occupants of cars during lightning strikes ⓘ radio frequency shielding ⓘ shielding rooms for secure communications ⓘ shielding sensitive measurements from external fields ⓘ |
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: Faraday cage Description of subject: A Faraday cage is an enclosure made of conductive material that blocks external static and non-static electric fields, protecting its interior from electromagnetic interference.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Van de Graaff generator
this entity surface form:
Faraday ice pail effect