cathode

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cathode

 [kath´ōd]
the electrode at which reduction occurs and to which cations are attracted. adj., adj cathod´ic.

cath·ode (Ca, C),

(kath'ōd),
The negative pole of a galvanic battery or the electrode connected with it; the electrode toward which positively charged ions (cations) migrate and are reduced, and into which electrons are fed from their source (anode or generator). Compare: anode.
Synonym(s): negative electrode
[G. kathodos, a way down, fr. kata, down, + hodos, a way]

cathode

/cath·ode/ (kath´ōd) the electrode at which reduction occurs and to which cations are attracted.cathod´ic

cathode (C)

[kath′ōd]
Etymology: Gk, kata, down, hodos, way
1 the electrode at which reduction occurs.
2 the negative side of the x-ray tube, which consists of the focusing cup and the filament.

cath·ode

(C) (kath'ōd)
1. The negative pole of a galvanic battery or the electrode connected with it; the electrode to which positively charged ions (cations) migrate.
Compare: anode
2. Negatively charged part of the x-ray tube head; it contains the tungsten filament.
Synonym(s): negative electrode.
[G. kathodos, a way down, fr. kata, down, + hodos, a way]

cathode

a negatively charged electrode to which positively charged ions move. Compare ANODE.

Cathode

The negative electrode from which an electromagnetic current flows.

cath·ode

(C) (kath'ōd)
1. The negative pole of a galvanic battery or the electrode connected with it; the electrode to which positively charged ions (cations) migrate.
Compare: anode
2. Negatively charged part of the x-ray tube head; it contains the tungsten filament.
Synonym(s): negative electrode.
[G. kathodos, a way down, fr. kata, down, + hodos, a way]

cathode (kath´ōd),

n a negative electrode from which electrons are emitted and to which positive ions are attracted. In radiographic tubes, the cathode usually consists of a helical tungsten filament, behind which a molybdenum reflector cup is located to focus the electron emission toward the target of the anode.
cathode ray tube (CRT),
n a vacuum tube in which a beam of electrons is focused to a small point on a luminescent screen and can be varied in position to form a pattern.

cathode

1. the negative electrode, from which electrons are emitted and to which positive ions are attracted.
2. the electrode through which current leaves a nerve or other substance.

cathode beam, cathode ray
the beam of electrons, accompanied by high electrical potential which flows from the cathode to the anode in the x-ray tube and interacts with the tungsten target to produce x-rays.
cathode filament
the source of electrons in the cathode tube that interacts with the anode target to produce x-rays.
References in periodicals archive ?
Disbondment of rubbers from cathodically protected steel.
In 2001, AC corrosion was determined to have caused defects on a section of a cathodically protected 412 km, 10 inch ethylene pipeline running through Scotland and England.
Cathodically electrodeposited films of the developed polyepoxide resins (MECNs) are self-curable without use of any external crosslinker.
Cathodically coloring layer PEDOT, and anodically coloring layer PTh.
173), (292), (310), (311) The diffusion of cations for charge neutralization of the cathodically produced hydroxyl ions is generally believed to be the rate-determining step.
UGI has planned to make replacement of contemporary materials, like high density plastic or cathodically protected steel, in order to change around 65 miles of cast iron and bare steel mains in the Greater Reading region.
The most obvious measurement to perform for cathodically protective metal pigment coatings is an open circuit potential measurement.
In addition 110,000 meters and regulators are needed along with repair or replacement of 12 of 14 city gates and 64 of 73 regulator stations plus the entire rectifier system used to cathodically protect the steel piping system.
1 million miles of cathodically protected steel pipeline.
b) The conducting polymer could functional to cathodically protect the metal (a sacrificial anode).
Approximately 65 miles of cast iron and bare steel mains are targeted for replacement by mains constructed of contemporary materials such as high density plastic or cathodically protected steel as part of the UGI infrastructure betterment program.
The 2002 changes, whose implementation has been delayed repeatedly, concern such things as when underground piping carrying oil needs to be cathodically protected, requirements for periodic integrity testing of containers, and periodic integrity and leak testing of valves and piping, testing of above ground containers for integrity on a regular schedule and much else.