cathode


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Related to cathode: Cathode rays, Cathode Follower, Cathode ray tube, cathode ray oscilloscope

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 ?
Cathodes made of the new material could drop the price of small lithium-ion batteries, says electrochemist George Blomgren of Blomgren Consulting Services in Lakewood, Ohio.
The DARPA-funded research would replace the hollow cathode with an array of field-effect cathodes fabricated from bundles of multi-walled carbon nanotubes.
After die removing, each cathode supported sintering process in two stages (T = 400[degrees]C, t = 2 h, T = 900[degrees]C, t = 8 h) by using Vulcan 550 resistance electric furnace.
Their electrons travel along a wire connected to a cathode suspended in the overlying water, which contains oxygen (SN: 7/13/2002,p.
It turned out that it was impossible to use ingenious development of Wenelt in cathodes of welding electric arc, because for stable work of the welding arc it is necessary that mean density of current on the surface of a non-consumable cathode of welding arc, in addition to the current density in the cathode spot, exceeded mentioned density in the tubes at least by three orders [4].
As at the cathode, an electrochemical process must occur at the interface to allow current to flow through the anodic polymer sample.
In addition, it is expected that the cathode material demand market would grow by 18% a year on average to 88,700ton in 2015 from 42,300ton in 2010 and its market would be increased in large-scale as battery market for EV starts in earnest after 2012.
Kenneth Lane, president of BASF s catalysts division, commented BASF brings global strength in cathode active materials to this new venture, together with a 150-year history of innovation.
Expectations are that 2,000-3,000 tons of cathode copper will be put out annually.
CaO solubility in Calcium chloride is very high (about 20% moles), making possible the electrolysis process and cathode deposited Calcium reduces the metal oxide that constitutes the cathode (Fray et al.
By contrast, the new cathode employs salts of an unusual ionic form of iron--hexavalent or superoxidized iron--that readily accept three electrons perion, Licht explains.
The profile is run across a cathode screen while the fiber passes through an anode screen placed above the profile.