A sodium-vapor lamp is a gas-discharge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm. Two varieties of such lamps exist: low pressure and high pressure. Low-pressure sodium lamps are highly efficient electrical light sources, but their yellow light restricts … Skatīt vairāk The low-pressure sodium arc discharge lamp was first made practical around 1920 owing to the development of a type of glass that could resist the corrosive effects of sodium vapor. These operated at pressures of less … Skatīt vairāk At end of life, high-pressure sodium (HPS) lamps exhibit a phenomenon known as cycling, caused by a loss of sodium in the arc. Sodium is a … Skatīt vairāk • Arc lamp – Light created by electrical breakdown of gas • High-intensity discharge lamp – Type of electric lamp/bulb (HID) • History of street lighting in the United States – … Skatīt vairāk Low-pressure sodium (LPS) lamps have a borosilicate glass gas discharge tube (arc tube) containing solid sodium and a small amount of neon and argon gas in a Penning mixture to … Skatīt vairāk High-pressure sodium (HPS) lamps have been widely used in industrial lighting, especially in large manufacturing facilities, and are commonly used as plant grow lights. They contain mercury. They have also been widely used for outdoor area lighting, such as … Skatīt vairāk • de Groot, J J; van Vliet; J A J M (1986). The High-Pressure Sodium Lamp. Deventer: Kluwer Technische Boeken BV. ISBN Skatīt vairāk • Museum of Electric Discharge Lamps Skatīt vairāk TīmeklisA deuterium arc lamp (or simply deuterium lamp) is a low-pressure gas-discharge light source often used in spectroscopy when a continuous spectrum in the ultraviolet region is needed. Plasma "arc" or discharge lamps using hydrogen are notable for their high output in the ultraviolet, with comparatively little output in the visible and infrared.

Sodium haute pression - Lumen

TīmeklisLa lampe électroluminescente, dite lampe LED [a] ou lampe DEL [b], est un type de lampe électrique qui utilise l’électroluminescence, phénomène opto-électronique issu … Tīmekliséclairage lampes ampoules hid Sodium haute pression Sodium haute pression Affichage En inventaire seulement Manufacturiers Lumens Température de la couleur Puissance Vie moyenne Type de base de lampe Désignation Type Forme de lampe Forme générale de lampe DLC Type de base de lampe groupe Couleur de lumière … powerbuilder string contains

Lampe - Vikidia, l’encyclopédie des 8-13 ans

TīmeklisExpérience d'optique : l'étude du doublet du sodium grâce à l'interféromètre de Michelson.Auteurs : Alain LE RILLE, professeur en CPGE au lycée Janson de Sai... TīmeklisA metal-halide lamp is an electrical lamp that produces light by an electric arc through a gaseous mixture of vaporized mercury and metal halides (compounds of metals with … TīmeklisElle s'exprime en lumens par watt (lm/W) dans le Système international d'unités . Si l'on note P la puissance reçue par la source, le plus souvent sous forme électrique, et le … powerbuilder syntaxfromsql