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Electrode where reduction takes place
A cathode is the electrode from which a conventional current leaves a polarized electrical device such as a lead–acid battery. This definition can be
Cathode
Vacuum tube used to display images
A cathode ray tube (CRT) is a vacuum tube containing one or more electron guns, which emit electron beams, which are directed and controlled to display
Cathode_ray_tube
Device that controls current between electrodes
heated electron-emitting cathode and an anode. Conventional current can flow in only one direction through the device: from the cathode to the anode (hence
Vacuum_tube
hollow cathode effect allows electrical conduction at a lower voltage or with more current in a cold-cathode gas-discharge lamp when the cathode is a conductive
Hollow_cathode_effect
Beam of electrons observed in vacuum tubes
Cathode rays are streams of electrons observed in discharge tubes. If an evacuated glass tube is equipped with two electrodes and a voltage is applied
Cathode_ray
Corrosion prevention technique
Cathodic protection (CP; /kæˈθɒdɪk/ ) is a technique used to control the corrosion of a metal surface by making it the cathode of an electrochemical cell
Cathodic_protection
Metallurgical product
Cathode copper is copper with a purity of 99.99%, and is commonly produced in the form of rectangular copper plates with "ears" for handling. It is mainly
Cathode_copper
Medium for transmitting moving images and sound
using a cathode-ray tube as a receiver, the concept of using one as a transmitter was novel. The first cathode-ray tube to use a hot cathode was developed
Television
Type of electrode
In vacuum tubes and gas-filled tubes, a hot cathode or thermionic cathode is a cathode electrode which is heated to make it emit electrons due to thermionic
Hot_cathode
Vacuum tube circuit design technique
electronics, cathode bias, also known as self-bias, or automatic bias, is a technique used with vacuum tubes to make the direct current (dc) cathode voltage
Cathode_bias
Electronic numeric display device
A Nixie tube (/ˈnɪk.siː/ NIK-see), or cold cathode display, is an electronic device used for displaying numerals or other information using glow discharge
Nixie_tube
Type of rechargeable battery
varieties, which are usually categorized by the materials used in the cathode. Compared to other types of rechargeable batteries, they generally have
Lithium-ion_battery
Electrode through which conventional current flows into a polarized electrical device
through which conventional current enters the device. This contrasts with a cathode, which is usually an electrode of the device through which conventional
Anode
British physicist (1856–1940)
investigations on the conduction of electricity by gases." In 1897, he showed that cathode rays were composed of previously unknown negatively charged particles (now
J._J._Thomson
Type of discharge tube
English physicist William Crookes and others around 1869–1875, in which cathode rays, streams of electrons, were discovered. Developed from the earlier
Crookes_tube
Type of electrode and part of cold cathode fluorescent lamp
A cold cathode is a cathode that is not electrically heated by a filament. A cathode may be considered "cold" if it emits more electrons than can be supplied
Cold_cathode
Two-terminal electronic component
with two electrodes, a heated cathode and a plate, in which electrons can flow in only one direction, from the cathode to the plate. Among many uses,
Diode
Lamp using fluorescence to produce light
as hot cathodes. However, cold cathode tubes have cathodes that emit electrons only due to the large voltage between the electrodes. The cathodes will be
Fluorescent_lamp
Electrical conductor used to make contact with nonmetallic parts of a circuit
(chemicals) depending on the type of cell. An electrode may be called either a cathode or anode according to the direction of the electric current, unrelated
Electrode
Instrument for displaying time-varying signals
response in single kHz, and were superseded by the oscilloscope which used a cathode-ray tube (CRT) as its display element. The Braun tube, the first version
Oscilloscope
Plasma formed by passage of current through gas
discharges are used as sources of light in devices such as neon lights, cold-cathode fluorescent lamps and plasma-screen televisions. Analyzing the light produced
Glow_discharge
Type of cold cathode lamp
A hollow-cathode lamp (HCL) is type of cold cathode lamp used in physics and chemistry as a spectral line source (e.g. for atomic absorption spectrometers)
Hollow-cathode_lamp
Vacuum tube that converts electrical input power into X-rays
the German physicist Wilhelm Conrad Röntgen. The first-generation cold cathode or Crookes X-ray tubes were used until the 1920s. These tubes work by ionisation
X-ray_tube
Battery with solid electrodes and a solid electrolyte
can use metallic lithium for the anode and oxides or sulfides for the cathode, thereby enhancing energy density. The solid electrolyte acts as an ideal
Solid-state_battery
Lithium-ion battery cathode material
vehicles, acting as the positively charged electrode, commonly called the cathode (though when charging it is actually the anode). When a battery is charged
Lithium nickel manganese cobalt oxides
Lithium_nickel_manganese_cobalt_oxides
Term used in electricity-related fields
see the illustration) to the cathode. In a diode, the operating current typically flows from the anode to the cathode, and an arrow on the diode symbol
Electrical_polarity
Type of rechargeable battery
Cu-substituted cathodes deliver better sodium storage. However, cathodes with Cu are more expensive. Research has also considered cathodes based on oxoanions
Sodium-ion_battery
Type of physical vapor deposition technique
Cathodic arc deposition or Arc-PVD is a physical vapor deposition technique in which an electric arc is used to vaporize material from a cathode target
Cathodic_arc_deposition
Has three identical diodes – two have cathodes connected to the triode's cathode, one has a separate cathode. Triode amplification factor: 70. Used as
List_of_vacuum_tubes
Electrochemical process for coating with metal
direct electric current. The part that needs to be coated acts as the cathode (negative electrode) of an electrolytic cell; the electrolyte is a solution
Electroplating
around the use of reusable cathode starter sheets for copper electrorefining and the automated stripping of the deposited “cathode copper” from them. The
IsaKidd_refining_technology
Electronic device/component that increases the strength of a signal
drain; for vacuum tubes, common cathode, common grid, and common plate. The common emitter (or common source, common cathode, etc.) is most often configured
Amplifier
Electrical component producing a narrow electron beam
electron beam that has a precise kinetic energy. The largest use is in cathode-ray tubes (CRTs), used in older television sets, computer displays and
Electron_gun
Cell that uses electrical energy to drive a non-spontaneous redox reaction
applied between the two electrodes—an anode (positively charged) and a cathode (negatively charged)—immersed in an electrolyte solution.[page needed]
Electrolytic_cell
hot-filament ionization gauge, sometimes called a hot-filament gauge or hot-cathode gauge, is the most widely used low-pressure (vacuum) measuring device for
Hot-filament_ionization_gauge
Diode that emits light from an organic compound
the first two layers, after which ITO or metal may be applied again as a cathode. Later, the entire stack of materials is encapsulated. The TFT layer, addressable
OLED
Earliest known interactive electronic game
The cathode-ray tube amusement device is the earliest-known concept for an interactive electronic game, as well as the first game concept to incorporate
Cathode-ray tube amusement device
Cathode-ray_tube_amusement_device
Beam of positively charged ions
tube which had a perforated cathode. When an electrical potential of several thousand volts is applied between the cathode and anode, faint luminous "rays"
Anode_ray
Device for receiving and viewing video content
popular consumer product after World War II in electronic form, using cathode ray tube (CRT) technology. The addition of color to broadcast television
Television_set
Type of solid-state switch
of the anode-to-cathode path. In a two-lead thyristor, conduction begins when the potential difference between the anode and cathode themselves is sufficiently
Thyristor
Device for generating microwaves
(called a control grid) is inserted between the cathode and the anode, the flow of electrons between the cathode and anode can be regulated by varying the voltage
Cavity_magnetron
1999 video game
Digimon: Anode/Cathode Tamer is one of two Digimon WonderSwan games (and one of the very few WonderSwan Color games) that are available in English. It
Digimon Adventure: Anode/Cathode Tamer
Digimon_Adventure:_Anode/Cathode_Tamer
Device that converts the chemical energy from a fuel into electricity
move from the anode to the cathode through the electrolyte. At the same time, electrons flow from the anode to the cathode through an external circuit
Fuel_cell
Technique in chemistry and manufacturing
them, and introduced terminology such as electrode, electrolyte, anode, cathode, anion, and cation. 1875 – Paul Émile Lecoq de Boisbaudran discovered gallium
Electrolysis
Type of microwave generator
A vircator (VIRtual CAthode oscillaTOR) is a microwave generator that is capable of generating brief pulses of tunable, narrow band microwaves at very
Vircator
Gas-filled tube used as a high-speed switch
The krytron is a cold-cathode gas-filled tube intended for use as a very high-speed switch, somewhat similar to the thyratron. It consists of a sealed
Krytron
Electrochemical process
more reactive) acts as anode and the other (that is less reactive) as cathode. The electropotential difference between the reactions at the two electrodes
Galvanic_corrosion
Type of rechargeable battery
progressive leakage of active material from the cathode, resulting in too few recharge cycles. Also, sulfur cathodes have low conductivity, requiring extra mass
Lithium–sulfur_battery
that involves the use of a solution of an electrolyte, an anode, and a cathode. The metal piece to be etched is connected to the positive pole of a source
Electroetching
Chemical reaction with oxidation state changes
equilibrium under standard conditions of an electrochemical cell in which the cathode reaction is the half-reaction considered, and the anode is a standard hydrogen
Redox
Primary or secondary battery
number of chemistries for reserve battery types have been studied, with cathode materials including silver chloride, copper(I) chloride, palladium(II)
Magnesium_battery
Electrolytic extraction process
recovered as it is reduced and deposited in an electroplating process onto the cathode. In electrorefining, the anode consists of the impure metal (e.g., copper)
Electrowinning
Cathode material for lithium batteries
water. Lithium iron phosphate is used as a positive electrode material (cathode) of lithium iron phosphate batteries, a type of Li-ion battery. The negative
Lithium_iron_phosphate
American physics professor (1910–2009)
March 5, 2009) was an American television pioneer, the co-inventor of the cathode-ray tube amusement device, and a professor of physics at Furman University
Thomas_T._Goldsmith_Jr.
Part of the Apollo Lunar Surface Experiments Package (ALSEP)
The Cold Cathode Gauge Experiment, also known as the Lunar Atmosphere Detector, was a scientific package that flew on board Apollo 12, Apollo 13, Apollo
Cold_Cathode_Gauge_Experiment
Metal–air electrochemical cell
uses oxidation of lithium at the anode and reduction of oxygen at the cathode to induce a current flow. Pairing lithium and ambient oxygen can theoretically
Lithium–air_battery
10−8 - 10−1 Pa) Most ion gauges come in two types: hot cathode and cold cathode. In the hot cathode version, an electrically heated filament produces an
Pressure_measurement
Industrial process for electrolysis of sodium chloride
into the cathode compartment. Similarly to the membrane cell, chloride ions are oxidized at the anode to produce chlorine, and at the cathode, water is
Chloralkali_process
Computer output device
replaced CCFL backlit LCDs. Before the mid-2000s, most monitors used a cathode ray tube (CRT) as the image output technology. A monitor is typically connected
Computer_monitor
Games from the 1940s to the 1970s
the definition of "video game" used. Following the 1947 invention of the cathode-ray tube amusement device—the earliest known interactive electronic game
Early_history_of_video_games
Gas-filled tube, electrical switch, rectifier
relative to the cathode because the grid repels electrons emitted by the cathode. Space charge limited electron current flows from the cathode through the
Thyratron
Capacitor used to prevent energy transfer between two circuits
In electronics, a decoupling capacitor is a capacitor used to decouple (i.e. prevent electrical energy from transferring to) one part of a circuit from
Decoupling_capacitor
Type of rechargeable battery without cobalt
of lithium-ion battery using lithium iron phosphate (LiFePO 4) as the cathode material, and a graphitic carbon electrode with a metallic backing as the
Lithium iron phosphate battery
Lithium_iron_phosphate_battery
German physicist (1824–1914)
when they hit the glass walls of the tubes. In 1876 the effect was named "cathode rays" by Eugen Goldstein. Hittorf's early investigations concerned the
Johann_Wilhelm_Hittorf
Gradual destruction of materials by chemical reaction with its environment
Cathodic protection (CP) is a technique to control the corrosion of a metal surface by making it the cathode of an electrochemical cell. Cathodic protection
Corrosion
Phenomenon in X-ray tubes
anode-cathode axis. X-rays emitted toward the anode are less intense than those emitted perpendicular to the cathode–anode axis or toward the cathode. The
Heel_effect
Elementary particle with negative charge
electrons can be accelerated, focused, and used for applications such as cathode ray tubes, electron microscopes, electron beam welding, lithography, and
Electron
Power supply with electrochemical cells
devices. When a battery is supplying power, its positive terminal is the cathode and its negative terminal is the anode. The terminal marked negative is
Electric_battery
High-temperature fuel cells
and above, non-precious metals can be used as catalysts at the anode and cathode, reducing costs. Improved efficiency is another reason MCFCs offer significant
Molten_carbonate_fuel_cell
Miniature high-gain dual triode vacuum tube
diode triode. The 6AV6 is a miniature repackaging (with just a single cathode) of the triode and twin diodes from the octal 6SQ7 (a double-diode triode
12AX7
Cylindrical battery size
most commonly lithium-based. NMC811 can be doped with ZrO2 to produce a cathode for these batteries. By 2023, some sodium-ion variants were available in
18650_battery
Vacuum tube used for amplifying radio waves
vacuum tube. As in the cathode-ray tube found in old televisions, electrons are produced by a heated negative electrode or cathode and accelerated by a
Inductive_output_tube
Form of electric spacecraft propulsion
difference is that the single cathode is replaced by multiple, smaller cathode rods packed into a hollow cathode tube. MPD cathodes are easily corroded due
Ion_thruster
Type of energy-storing battery
formed from charge carriers supplied by the cathode. As such, before charging, the battery consists of a cathode, current collectors, separator and electrolyte
Anode-free_battery
Obsolete electronic device for counting in decimal
generically three-phase gas counting tube or glow-transfer counting tube or cold cathode tube) is a gas-filled decade counting tube. Dekatrons were used in computers
Dekatron
Type of electrical rectifier with a liquid cathode
into direct current (DC). It is a type of cold cathode gas-filled tube, but is unusual in that the cathode, instead of being solid, is made from a pool
Mercury-arc_valve
American electric vehicle and clean energy company
vehicles. Tesla sources these batteries with a nickel-cobalt-aluminum (NCA) cathode chemistry from Panasonic's factories in Japan. The next battery type to
Tesla,_Inc.
Part of a cathode ray tube which moves the electron beam around
A deflection yoke is a kind of magnetic lens, used in cathode-ray tubes to scan the electron beam both vertically and horizontally over the whole screen
Deflection_yoke
Hungarian–German physicist (1862–1947)
physicist who received the Nobel Prize in Physics in 1905 for his work on cathode rays. This work led to his experimental realization of the photoelectric
Philipp_Lenard
Type of vacuum pump
Penning observed some evidence of pumping in the operation of his cold cathode gauge. These early effects were comparatively slow to pump, and were therefore
Ion_pump
Branch of physical chemistry
reduction potential for the cathode and the oxidation potential for the anode. E°cell = E°red (cathode) – E°red (anode) = E°red (cathode) + E°oxi (anode) For
Electrochemistry
Fuel cell that produces electricity by oxidization
use a solid oxide electrolyte to conduct negative oxygen ions from the cathode to the anode. The electrochemical oxidation of the hydrogen, carbon monoxide
Solid_oxide_fuel_cell
Electrochemical process
temperature-controlled bath of electrolyte and serves as the anode. At the cathode, a reduction reaction occurs, which normally produces hydrogen. The tiny
Electropolishing
Hybrid type of capacitor
lithium-ion cells and the cathode is the same as those used in supercapacitors. Activated carbon is typically used as the cathode. The anode of the LIC consists
Lithium-ion_capacitor
Type of electrolyzer
diaphragm further avoids the mixing of the produced hydrogen and oxygen at the cathode and anode, respectively. The thickness of asbestos diaphragms ranges from
Alkaline_water_electrolysis
Luminescent substance
cathodoluminescent substances which glow when struck by an electron beam (cathode rays) in a cathode-ray tube. When a phosphor is exposed to radiation, the orbital
Phosphor
electrodes (cathode and anode) have central holes approximately 3 to 5 mm in diameter. Behind the cathode and anode lie a hollow cathode and hollow anode
Pseudospark_switch
High-energy-density electrical storage device
the cathode and forms hydroxyl ions which migrate into the zinc paste and form zincate (Zn(OH)2− 4), releasing electrons to travel to the cathode. The
Zinc–air_battery
The Cathode Ray are a Scottish alternative band based in Edinburgh, Scotland. The current line-up is Jeremy Thoms (lead vocals/guitar/keyboards), Steve
The_Cathode_Ray
Type of lithium-ion cell
(LMO) is a lithium-ion cell that uses manganese dioxide ( MnO 2), as the cathode material. They function through the same intercalation/de-intercalation
Lithium ion manganese oxide battery
Lithium_ion_manganese_oxide_battery
Type of capacitor
serving in principle as the second electrode (cathode) (-) of the capacitor. A second aluminum foil called "cathode foil" contacts the electrolyte and serves
Aluminum electrolytic capacitor
Aluminum_electrolytic_capacitor
Type of battery
significantly higher numbers of electrons and Al3+ ions can be accepted by cathodes with little damage. Al has 50 times (23.5 megawatt-hours m-3) the energy
Aluminium-ion_battery
Device used in television cameras
Video camera tubes are devices based on the cathode-ray tube that were used in television cameras to capture television images, prior to the introduction
Video_camera_tube
Type of fuel cell
at the anode and reduction of water occurring at the cathode. Anode: 2 O2− → O2 + 4 e− Cathode: H2O + 2 e− → H2 + O2− Net Reaction: 2 H2O → 2 H2 + O2
Solid_oxide_electrolyzer_cell
Electrode used to control electron flow within a vacuum tube
the cathode to the anode (plate) electrode. The control grid usually consists of a cylindrical screen or helix of fine wire surrounding the cathode, and
Control_grid
Physical law about electrical discharge in gases
prediction for very small electrode gaps, when field emission from the cathode surface becomes important. The mean free path of a molecule in a gas is
Paschen's_law
American electronics engineer and inventor (1901–1965)
American electronics engineer, scientist, and inventor who improved the cathode-ray tube in 1931 for use in television receivers. Seven years later he
Allen_B._DuMont
Early gas-discharge lamp
straight lines through the tube from the cathode. These were named cathode rays. In 1897 J. J. Thomson showed that cathode rays consisted of a previously unknown
Geissler_tube
power desalination of water in situ, resourcing the natural anode and cathode gradient of the electro-active bacteria and thus creating an internal supercapacitor
Microbial_desalination_cell
Single-grid amplifying vacuum tube having three active electrodes
three electrodes inside an evacuated glass envelope: a heated filament or cathode, a grid, and a plate (anode). Developed from Lee De Forest's 1906 Audion
Triode
CATHODE
CATHODE
CATHODE
CATHODE
Boy/Male
Indian, Punjabi, Sikh
Immortal Warrior
Girl/Female
Biblical
Worthless, good-for-nothing.
Boy/Male
Irish
Dark wisdom.
Male
English
Variant spelling of English Ackley, ACKLEA means "oak meadow."
Girl/Female
Tamil
Yavanika | யாவநீகா
Curtain of stage
Male
Polish
Polish form of Roman Latin Valentinus, WALENTY means "healthy, strong."
Surname or Lastname
English
English : variant of Seagrave.
Male
Russian
(Феофан) Russian form of Greek Theophanes, FEOFAN means "manifestation of God."
Girl/Female
Indian
Beautiful night
Girl/Female
Arabic, Muslim, Pakistani, Urdu
Dew Flower
CATHODE
CATHODE
CATHODE
CATHODE
CATHODE
n.
A cathode.
n.
The negative pole or cathode.
n.
The part of a voltaic battery by which the electric current leaves substances through which it passes, or the surface at which the electric current passes out of the electrolyte; the negative pole; -- opposed to anode.
n.
The part of a vacuum tube opposite the cathode. Upon it the cathode rays impinge.
n.
An electro-positive substance, which in electro-decomposition is evolved at the cathode; -- opposed to anion.
n.
The condition of increased irritability of a nerve in the region of the cathode or negative electrode, on the passage of a current of electricity through it.
n.
The positive pole of an electric battery, or more strictly the electrode by which the current enters the electrolyte on its way to the other pole; -- opposed to cathode.