This Day in History: Thomas Edison Observes the Edison Effect (1880)

This Day in History:
Thomas Edison Observes the Edison Effect (1880)

Known as “the Edison Effect,” thermionic emission is the emission of electrons or ions by substances that are highly heated. The charged particles that are emitted are called thermions, and their number rapidly increases with the temperature of the substance. If the heated substance that emits thermions carries a charge, the thermions will carry the same charge. The effect was observed by Edison in 1883 when he was working on what invention? More…: https://play.google.com/store/apps/details?id=com.tfd.mobile.TfdSearch

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