mercury-arc tube
51Lampe au néon — Tube fluorescent Tubes fluorescents: vert, rouge (néon), violet. Un tube fluorescent est un type particulier de lampe électrique, qui produit de la lumière, grâce à une décharge électrique dans un tube. Leur lumière peut être blanche (pour l… …
52Tubes à fluorescence — Tube fluorescent Tubes fluorescents: vert, rouge (néon), violet. Un tube fluorescent est un type particulier de lampe électrique, qui produit de la lumière, grâce à une décharge électrique dans un tube. Leur lumière peut être blanche (pour l… …
53Fluorescent lamp — A fluorescent lamp or fluorescent tube is a gas discharge lamp that uses electricity to excite mercury vapor. The excited mercury atoms produce short wave ultraviolet light that then causes a phosphor to fluoresce, producing visible light.Unlike… …
54Compact fluorescent lamp — Low energy light bulb redirects here. For other low energy bulbs, see LED lamp. The tubular type compact fluorescent lamp is one of the most popular types in Europe …
55Ames Research Center — Ames Research Center …
56telescope — /tel euh skohp /, n., adj., v., telescoped, telescoping. n. 1. an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens… …
57building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …
58Neon lighting — Times Square, New York City, has been famous for elaborate neon lighting displays since th …
59History of street lighting in the United States — The use of street lighting was first recorded in the Arab Empire from the 9th 10th centuries, [Fielding H. Garrison, History of Medicine :quote| The Saracens themselves were the originators not only of algebra, chemistry, and geology, but of many …
60Cold cathode — This article is about light sources and indicators. For cold cathode ion sources, see Ion source. CCFL redirects here. For other uses, see CCFL (disambiguation). Cold cathode fluorescent lamp A cold cathode is a cathode used within nixie tubes,… …
