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  • Thumbnail for Cathode-ray tube
    it to evaporate. Partial loss of vacuum in a CRT can result in a hazy image, blue glowing in the neck of the CRT, flashovers, loss of cathode emission...
    266 KB (29,009 words) - 04:59, 2 November 2024
  • Thumbnail for Hot cathode
    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...
    21 KB (2,569 words) - 02:12, 1 March 2024
  • outside the USSR. The arc evaporation process begins with the striking of a high current, low voltage arc on the surface of a cathode (known as the target)...
    8 KB (1,127 words) - 03:04, 12 June 2024
  • Thumbnail for Vacuum tube
    life, and a long-lasting cathode in particular, were produced. The problem of short lifetime was traced largely to evaporation of silicon, used in the...
    120 KB (15,367 words) - 03:53, 22 September 2024
  • Thumbnail for 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 (11,319 words) - 23:33, 11 November 2024
  • Thumbnail for Solid-state battery
    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...
    85 KB (8,996 words) - 21:47, 12 November 2024
  • Thumbnail for Electron-beam welding
    evaporation is negligible for most metals, which is favorable for welding. At higher power, the material affected by the beam can quickly evaporate;...
    22 KB (2,948 words) - 00:26, 15 October 2024
  • Thumbnail for Fuel cell
    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...
    140 KB (14,510 words) - 22:51, 1 November 2024
  • 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...
    16 KB (1,811 words) - 03:09, 7 October 2024
  • Thumbnail for Electron
    electrolysis, electrochemistry, battery technologies, electronics, welding, cathode-ray tubes, photoelectricity, photovoltaic solar panels, electron microscopes...
    154 KB (15,572 words) - 03:29, 11 November 2024
  • Thumbnail for Solid oxide fuel cell
    use a solid oxide electrolyte to conduct negative oxygen ions from the cathode to the anode. The electrochemical oxidation of the hydrogen, carbon monoxide...
    68 KB (9,029 words) - 12:01, 9 October 2024
  • Thumbnail for Pressure measurement
    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...
    74 KB (9,894 words) - 01:28, 28 July 2024
  • Thumbnail for Phosphor
    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...
    59 KB (5,331 words) - 08:04, 24 July 2024
  • Thumbnail for Video camera tube
    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...
    109 KB (12,464 words) - 16:34, 25 October 2024
  • Thumbnail for Electroplating
    means of a direct electric current. The part to be coated acts as the cathode (negative electrode) of an electrolytic cell; the electrolyte is a solution...
    30 KB (3,834 words) - 16:47, 26 September 2024
  • Thumbnail for Atomic absorption spectroscopy
    gas. The gas ions are accelerated towards the cathode and, upon impact on the cathode, sputter cathode material that is excited in the glow discharge...
    35 KB (4,817 words) - 23:44, 24 October 2024
  • Thumbnail for OLED
    is difficult with these methods. The metal cathode may still need to be deposited by thermal evaporation in vacuum. An alternative method to vacuum deposition...
    157 KB (17,584 words) - 05:58, 12 November 2024
  • chloride solutions, all proceeding according to the following equations: Cathode: 2 H+ (aq) + 2 e− → H2 (g) Anode: 2 Cl− (aq) → Cl2 (g) + 2 e− Overall process:...
    22 KB (2,501 words) - 12:32, 29 April 2024
  • the evaporating anode material atoms, and when the voltage applied is high enough, a bright discharge is ignited between the electrodes. Cathodic arc...
    3 KB (328 words) - 09:52, 3 January 2024
  • Thumbnail for Aluminum electrolytic capacitor
    serving in principle as the second electrode (cathode) (-) of the capacitor. A second aluminum foil called "cathode foil" contacts the electrolyte and serves...
    113 KB (13,029 words) - 23:49, 12 June 2024
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