cathode

nounB1

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Danh từ

noun

Plural noun:

cathodeskathode

1.
(electricity) An electrode, of a cell or other electrically polarized device, through which a positive current of electricity flows outwards (and thus, electrons flow inwards). It can have either a negative or a positive voltage with respect to anode of the same polarized device (depending on whether the device is a load or a source, respectively).
2.
(broadly)(by extension) The electrode at which chemical reduction of cations takes place, usually resulting in the deposition of metal onto the electrode.
3.
(electronics) The electrode from which electrons are emitted into a vacuum tube or gas-filled tube.
4.
(electronics) That electrode of a semiconductor device which is connected to the n-type material of a p-n junction.

Từ liên quan

Trái nghĩa

anode

Cùng gốc / liên quan

cascodecathodalcathodographcathodoluminescencecathodoluminescentmicrocathodeanticathodebiocathodecathode dark spacecathode raycathode-ray tubecathodiccatholytecold cathodehot cathodemulticathodephotocathodecold-cathode fluorescent lampcold-cathode lampcold-cathode light

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Nguồn gốc từ

ine-pro From grc κατα- down and ὁδός (journey, way), equivalent to Ancient Greek κάθοδος (way down, descent). William Whewell, 1834 for Michael Faraday, who introduced it later that year. cata-.