| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Edison effect | Aerospace | The flow of an electric current through a laboratory vacuum, between two metal wires, one of which is heated. The current flows only when the heated wire is more negative, because it is due to free electrons released from the wire by heat. The Edison effect made possible "vacuum tubes" used in radio and television equipment before the invention of the transistor. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
