Ion

: This article is about the electrically charged particle. For other uses of this word, see ion (disambiguation).

Applications

Ions have many practical, everyday applications in items such as smoke detectors and are also finding use in unconventional technologies such as ion engines and ion cannons.

Related Topics:
Smoke detectors - Ion engines - Ion cannons

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Etymology

The word ion is a name given by Michael Faraday, from Greek {{polytonic|ἰόν}}, neutral present participle of {{polytonic|ἰέναι}}, "to go", thus "a goer". So, anion, {{polytonic|ἀνιόν}}, and cation, κ{{polytonic|ατιόν}}, mean "(a thing) going up" and "(a thing) going down", respectively, and anode, {{polytonic|ἄνοδος}}, and cathode, κ{{polytonic|άθοδος}}, mean "a going up" and "a going down", respectively, from {{polytonic|ὁδός}}, "way".

Related Topics:
Michael Faraday - Greek

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