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An electric arc (or arc discharge) is an electrical breakdown of a gas that produces a prolonged electrical discharge. The current through a normally nonconductive medium such as air produces a plasma, which may produce visible light. An arc discharge is initiated either by thermionic emission or by field emission. After initiation, the arc relies on…
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arc electric current electrodes electrical voltage arcs discharge used spark plasma gas high air arcing circuit also may glow welding
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Electric arc | is a | form of electric discharge with the highest current density | 0.90 | text |
| Electric arc | is a | continuous discharge | 0.90 | text |
| air produces a plasma | instance of | The current through a normally nonconductive medium | 0.80 | text |
| which may produce visible light | instance of | The current through a normally nonconductive medium | 0.80 | text |
| searchlights until World War II | instance of | They were used for street lights in the 19th century and for specialized applications | 0.80 | text |
| melting of conductors | instance of | the arc can cause damage to equipment | 0.80 | text |
| destruction of insulation | instance of | the arc can cause damage to equipment | 0.80 | text |
| and fire | instance of | the arc can cause damage to equipment | 0.80 | text |
| contact arc suppressors | instance of | relays and switches can be reduced by devices | 0.80 | text |
| RC snubbers or through techniques including | instance of | relays and switches can be reduced by devices | 0.80 | text |
| electromechanical power switches | instance of | the latter method generally applies to devices | 0.80 | text |
| relays | instance of | the latter method generally applies to devices | 0.80 | text |
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