Traduction et analyse de mots par intelligence artificielle ChatGPT
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Qu'est-ce (qui) est hydrargyrum$36385$ - définition
![Mercury [[manometer]] to measure pressure](https://commons.wikimedia.org/wiki/Special:FilePath/Barometer mercury column hg.jpg?width=200 "Mercury [[manometer]] to measure pressure")
.jpg?width=200 "EPA workers clean up residential mercury spill in 2004")
![The bulb of a [[mercury-in-glass thermometer]]](https://commons.wikimedia.org/wiki/Special:FilePath/Maximum thermometer close up 2.JPG?width=200 "The bulb of a [[mercury-in-glass thermometer]]")
![Native mercury with [[cinnabar]], Socrates mine, [[Sonoma County, California]]. Cinnabar sometimes alters to native mercury in the oxidized zone of mercury deposits.](https://commons.wikimedia.org/wiki/Special:FilePath/Mercury-27128.jpg?width=200 "Native mercury with [[cinnabar]], Socrates mine, [[Sonoma County, California]]. Cinnabar sometimes alters to native mercury in the oxidized zone of mercury deposits.")
![the planet Mercury]] (☿) has been used since ancient times to represent the element](https://commons.wikimedia.org/wiki/Special:FilePath/Mercury symbol (fixed width).svg?width=200 "the planet Mercury]] (☿) has been used since ancient times to represent the element")
![pound coin]] (density ~7.6 g/cm<sup>3</sup>) floats on mercury due to the combination of the [[buoyant force]] and [[surface tension]].](https://commons.wikimedia.org/wiki/Special:FilePath/Pound-coin-floating-in-mercury.jpg?width=200 "pound coin]] (density ~7.6 g/cm<sup>3</sup>) floats on mercury due to the combination of the [[buoyant force]] and [[surface tension]].")
![The deep violet glow of a mercury vapor discharge in a [[germicidal lamp]], whose spectrum is rich in invisible ultraviolet radiation.](https://commons.wikimedia.org/wiki/Special:FilePath/Germicidal UV discharge tube glow rotate.jpg?width=200 "The deep violet glow of a mercury vapor discharge in a [[germicidal lamp]], whose spectrum is rich in invisible ultraviolet radiation.")
![Skin tanner containing a low-pressure mercury vapor lamp and two infrared lamps, which act both as light source and [[electrical ballast]]](https://commons.wikimedia.org/wiki/Special:FilePath/Mercuryvaporlamp.jpg?width=200 "Skin tanner containing a low-pressure mercury vapor lamp and two infrared lamps, which act both as light source and [[electrical ballast]]")
![The miniaturized [[Deep Space Atomic Clock]] is a linear ion-trap-based mercury ion clock, designed for precise and real-time radio navigation in deep space.](https://commons.wikimedia.org/wiki/Special:FilePath/Deep Space Atomic Clock-DSAC.jpg?width=200 "The miniaturized [[Deep Space Atomic Clock]] is a linear ion-trap-based mercury ion clock, designed for precise and real-time radio navigation in deep space.")
Wikipédia
Hydrargyrum medium-arc iodide (HMI) is the trademark name of Osram's brand of metal-halide gas discharge medium arc-length lamp, made specifically for film and entertainment applications. Hydrargyrum comes from the Greek name for the element mercury.
An HMI lamp uses mercury vapour mixed with metal halides in a quartz-glass envelope, with two tungsten electrodes of medium arc separation. Unlike traditional lighting units using incandescent light bulbs, HMIs need electrical ballasts, which are separated from the head via a header cable, to limit current and supply the proper voltage. The lamp operates by creating an electrical arc between two electrodes within the bulb that excites the pressurized mercury vapour and metal halides, and provides very high light output with greater efficiency than incandescent lighting units. The efficiency advantage is near fourfold, with approximately 85–108 lumens per watt of electricity. Unlike regular incandescent halogen lamps where a halide gas is used to regenerate the filament and keep the evaporated tungsten from darkening the glass, the mercury vapour and the metal halides in HMI lamps are what emit the light. The high color rendering index (CRI) and color temperature are due to the specific lamp chemistry.
