Technologies
Incandescent lamp - arguably, the first technology applied to attain artificial lighting. Incandescence is the emission of light from a hot body as a result of its temperature. The term derives from the Latin verb “incandescere”, to glow white. An incandescent light bulb produces light with a filament wire heated to a high temperature by an electric current passing through it. The hot filament is protected from oxidation with a glass or quartz bulb that is filled with inert gas or evacuated.
Halogen light bulb – a variation on the incandescent bulb. The main principal of light remains the same, however In a halogen lamp, filament evaporation is prevented by a chemical process that redeposits metal vapor onto the filament, extending its life to 2000-4000 hours.
Fluorescent lamp - gas-discharge light source in which the electric discharge of mercury vapor produces ultraviolet light, which turns into visible light by the help of phosphor and other elements blend.
Gas-discharge lamp - light source that emits visible energy range. The physical basis is an electric discharge in gas.
Induction lamp - electric light source, which works based on the principle of electromagnetic induction and gas discharge to generate visible light. Basically, this is a modification of a fluorescent lamp, with the main advantage being removal of electrodes – the current no longer needs wires, which in turn increases the lifetime of the lamp.
LED lamps – semiconductor-based lighting technology used for residential, industrial and street lighting. LED lamps are one of the cleanest light sources in the lighting world – less hazardous materials are required in production of LED lamps, e.g. they lamps do not contain mercury-containing substances, so they do not pose a risk in the event of failure or damage.
