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searching for Hot cathode 17 found (62 total)

Pressure measurement (9,894 words) [view diff] exact match in snippet view article find links to article

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

Plasma torch (951 words) [view diff] no match in snippet view article find links to article

A plasma torch (also known as a plasma arc, plasma gun, plasma cutter, or plasmatron) is a device for generating a directed flow of plasma. The plasma

William D. Coolidge (1,046 words) [view diff] exact match in snippet view article find links to article

was not valid as an invention. In 1913 he invented the Coolidge tube (hot cathode tube), an X-ray tube with an improved cathode for use in X-ray machines

Vacuum (7,626 words) [view diff] exact match in snippet view article find links to article

used in ultrahigh vacuum. They come in two types: hot cathode and cold cathode. In the hot cathode version an electrically heated filament produces an

Albert W. Hull (847 words) [view diff] no match in snippet view article find links to article

ion bombardment. This discovery enabled the successful development of hot-cathode thyratrons (gaseous triodes) and phanotrons (gaseous diodes). In the

Franck–Hertz experiment (3,779 words) [view diff] exact match in snippet view article find links to article

hot cathode; a metal mesh grid; and an anode. The grid's voltage is positive relative to the cathode, so that electrons emitted from the hot cathode are

Noise-figure meter (775 words) [view diff] exact match in snippet view article find links to article

(plate) is high enough to collect all the electrons emitted from the hot cathode. The operating conditions are set to avoid a space charge around the

Barium hexaboride (106 words) [view diff] no match in snippet view article find links to article

minutes. Barium hexaboride has been considered as a candidate for use in hot-cathode electron guns. Massidda, S.; Monnier, R.; Stoll, E. (October 2000). "Electronic

Kinjiro Okabe (920 words) [view diff] no match in snippet view article find links to article

oscillations at wavelengths down to about 12 cm (2.5 GHz). He also developed a hot-cathode discharge device (called the Osaka tube) that had characteristics similar

Timeline of heat engine technology (2,651 words) [view diff] exact match in snippet view article find links to article

arc-mode caesium vapor thermionic converter by V. Wilson. Electrons from a hot cathode act as a working fluid which condenses on a cold anode and produces an

Mercury-arc valve (3,437 words) [view diff] no match in snippet view article find links to article

low arc voltages (typically 20–30 V) and so is an efficient rectifier. Hot-cathode, gas discharge tubes such as the thyratron may also achieve similar levels

External beam radiotherapy (2,796 words) [view diff] exact match in snippet view article find links to article

using an X-ray tube, in which electrons travel through a vacuum from a hot cathode to a cold anode, which also acts as the target. However, it is impractical

Thomas Townsend Brown (2,334 words) [view diff] exact match in snippet view article find links to article

discovered an unusual effect while experimenting with a Coolidge tube (hot cathode tube), a type of X-ray vacuum tube with two asymmetrical electrodes.

Ion thruster (8,749 words) [view diff] exact match in snippet view article find links to article

from the propellant gas's atoms. These electrons can be provided by a hot cathode filament and accelerated through the potential difference towards an

Willis R. Whitney (5,522 words) [view diff] exact match in snippet view article find links to article

French Legion of Honor. Coolidge also had a breakthrough in 1913 with his hot cathode X-ray tube. Ezekiel Weintraub worked on various projects alongside Coolidge

Integrated gasification fuel cell cycle (1,980 words) [view diff] exact match in snippet view article find links to article

cooling is provided by an air blower; heat can be recovered from the hot cathode off-gas stream to preheat the process air as needed, and for the generation

DU spectrophotometer (7,038 words) [view diff] exact match in snippet view article find links to article

As described in July 1941, the Beckman spectrophotometer could use a "hot cathode hydrogen discharge tube" or a tungsten light source interchangeably.: 684–685