Light tubes (also known as solar pipes, tubular skylights or sun tunnels) are structures that transmit or distribute natural or artificial light for the...

fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in...

A light tube is used for transporting natural or artificial light for illumination. Light tube or light pipe may also refer to: Waveguide (optics), a...

electrified glass tubes or bulbs that contain rarefied neon or other gases. Neon lights are a type of cold cathode gas-discharge light. A neon tube is a sealed...

gas-filled tube surrounded by a lens. When electricity is applied, the tube flashes and is magnified by the lens, and a 360 degree light is emitted....

detection of light intensities. In both types, the electrons are accelerated from the cathode to the anode by the electric field in the tube. The simplest...

discharge. The discharge tube may be linear (SLI lamp) or U-shaped. When the lamp is first started, it emits a dim red/pink light to warm the sodium metal;...

through vaporized mercury to produce light. The arc discharge is generally confined to a small fused quartz arc tube mounted within a larger soda lime or...

practical demonstration of an arc light in 1806. In 1840, Warren de la Rue enclosed a platinum coil in a vacuum tube and passed an electric current through...

An arc lamp or arc light is a lamp that produces light by an electric arc (also called a voltaic arc). The carbon arc light, which consists of an arc between...