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...
24 KB (2,877 words) - 19:49, 28 August 2024
A cathode-ray tube (CRT) is a vacuum tube containing one or more electron guns, which emit electron beams that are manipulated to display images on a...
265 KB (28,861 words) - 07:30, 28 August 2024
Cathode rays or electron beams (e-beam) are streams of electrons observed in discharge tubes. If an evacuated glass tube is equipped with two electrodes...
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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...
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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...
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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...
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Vacuum tube (redirect from Indirectly heated cathode)
heated electron-emitting cathode and an anode. Electrons can flow in only one direction through the device—from the cathode to the anode. Adding one or...
120 KB (15,394 words) - 08:07, 27 August 2024
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...
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Nixie tube (redirect from Cold cathode display)
A Nixie tube (English: /ˈnɪk.siː/ NIK-see), or cold cathode display, is an electronic device used for displaying numerals or other information using glow...
22 KB (2,616 words) - 04:32, 31 July 2024
Oscilloscope (redirect from Cathode-ray Oscilloscope)
frequency response, and were superseded by the oscilloscope which used a cathode ray tube (CRT) as its display element. The Braun tube, forerunner of the...
64 KB (8,498 words) - 06:04, 19 August 2024
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...
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J. J. Thomson (section Experiments with cathode rays)
the first subatomic particle to be found. In 1897, Thomson showed that cathode rays were composed of previously unknown negatively charged particles (now...
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Electrode (redirect from Anode and cathode)
materials. The basis of all these is still using two electrodes, anodes and cathodes. 'Anode' was coined by William Whewell at Michael Faraday's request, derived...
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Fluorescent lamp (redirect from Cold-cathode fluorescent lamp)
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...
96 KB (11,323 words) - 19:03, 24 August 2024
X-ray tube (section Crookes tube (cold cathode tube))
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...
21 KB (2,753 words) - 18:21, 27 August 2024
Glow discharge (redirect from Cathode fall)
discharges are used as a source of light in devices such as neon lights, cold cathode fluorescent lamps and plasma-screen televisions. Analyzing the light produced...
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Television (redirect from Cathode-ray television)
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...
164 KB (18,540 words) - 17:45, 8 August 2024
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)...
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Lithium-ion battery (section Cathode)
(with a polymer gel as an electrolyte), a lithium cobalt oxide (LiCoO 2) cathode material, and a graphite anode, which together offer high energy density...
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English physicist William Crookes and others around 1869–1875, in which cathode rays, streams of electrons, were discovered. Developed from the earlier...
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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...
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Hot-filament ionization gauge (redirect from Hot cathode ionization gauge)
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...
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with two electrodes, a heated cathode and a plate, in which electrons can flow in only one direction, from the cathode the to plate. Among many uses,...
63 KB (7,282 words) - 20:12, 14 August 2024
The cathode-ray tube amusement device is the earliest known interactive electronic game as well as the first game to incorporate an electronic display...
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Decoupling capacitor (redirect from Cathode-bypass capacitor)
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...
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through which conventional current enters the device. This contrasts with a cathode, an electrode of the device through which conventional current leaves the...
20 KB (2,569 words) - 21:11, 27 May 2024
Solid-state battery (section Cathode)
can use metallic lithium for the anode and oxides or sulfides for the cathode, increasing energy density. The solid electrolyte acts as an ideal separator...
84 KB (8,860 words) - 20:31, 27 August 2024
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...
37 KB (3,575 words) - 19:47, 26 August 2024
Cathodic modification within chemistry is the retardation of anodic reaction as the result of an increase in the ability of an alloy to be passivated by...
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Corrosion (section Cathodic protection)
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...
48 KB (6,215 words) - 10:55, 15 August 2024