The Fluorescent light obtained its consideration in the photography, cinematography and television fields. The low source required, the low hot temperature emission, and the bulb light spectrum stability contribute to make this bulb successful. This kind of light, at non continuous spectrum, belong today to almost all indoor environments both private and industrial. Fluorescent tubes for cinematography have stability chromaticity and light bundle different from the same bulbs used for indoors or industrial environments, but for the principle their made of, they all keep a high level of radiations in some zones of the spectrum.

The structure
The base principle is that of supplying the light through substances hit by a flow of photons. These bulbs are made by a tube of hard glass that contains low pressure mercury vapors with a small gas quantity required to catalyze the tube. The voltaic arc that comes out from the two electrodes excites the fluorescence.

Technical features
In the family of bulbs that generates white light the bulbs are selected depending on the color temperature required in photography, cinematography and television. The lamps require an electronic system able to produce discharge sequence that will allow to eliminate the "flicker" that may occur. The maximum light efficiency and spectrum and chromatic stability, is reached soon after the start up, but may change if the microclima condition around the tubes is modified due to the presence of filters or any other accessory that increase the thermal concentration along the tube.