TUBE LIGHT WORKING PRINCIPLE PDF DOWNLOAD

Fluorescent lamps work by ionizing mercury vapor in a glass tube. This causes electrons in the gas to emit photons at UV frequencies. The UV light is converted into standard visible light using a phosphor coating on the inside of the tube. A fluorescent light does not have the usual glowing filament of an incandescent bulb, but instead contains a mercury vapor that gives off ultraviolet light when. Tube light is a lamp that works on low pressure mercury vapor discharge Fluorescent Lamp and Working Principle of Fluorescent Lamp.


TUBE LIGHT WORKING PRINCIPLE PDF DOWNLOAD

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TUBE LIGHT WORKING PRINCIPLE PDF DOWNLOAD


TUBE LIGHT WORKING PRINCIPLE PDF DOWNLOAD

It was similar to a fluorescent lamp without the fluorescent coating on the tube, and produced greenish light. The round device under the tube light working principle is the ballast.

While Becquerel was interested primarily in conducting scientific research into fluorescence, Thomas Edison briefly pursued fluorescent lighting for its commercial potential.

He invented a fluorescent lamp in that used a coating of calcium tungstate as the fluorescing substance, excited by X-raysbut although it received a patent in[6] it was not put into production. As with a few other attempts tube light working principle use Geissler tubes for illumination, it had a short operating life, and tube light working principle the success of the incandescent light, Edison had little reason to pursue an alternative means of electrical illumination.

Fluorescent lamp

Nikola Tesla made similar experiments in the s, devising high-frequency powered fluorescent bulbs that gave a bright greenish light, tube light working principle as with Edison's devices, no commercial success was achieved.

Although Edison had lost interest in fluorescent lighting, one of his former employees was able to create a gas-based lamp that achieved a measure of commercial success.

In Daniel McFarlan Moore demonstrated lamps 2 to 3 meters 6. As with future fluorescent lamps, they were considerably more complicated than an incandescent bulb.

Working Principle of a Tube Light

These patents and the inventive efforts that supported them were to be of considerable value when the firm took up fluorescent lighting more than two decades later. At about the same time that Moore was tube light working principle his lighting system, another American was creating a means of illumination that also tube light working principle be seen as a precursor to the modern fluorescent lamp.

The mercury-vapor lamp was superior to the incandescent lamps of the time in terms of energy efficiency, but the blue-green light it produced limited its applications. It was, however, used for photography and some industrial processes.

TUBE LIGHT WORKING PRINCIPLE PDF DOWNLOAD

Mercury vapor lamps continued to be developed at a slow pace, especially in Europe, and by the early s they received limited use for large-scale illumination.

Some of them employed fluorescent coatings, but these were used primarily for color correction and not for enhanced light output. Mercury vapor lamps also anticipated tube light working principle fluorescent lamp in their incorporation of a ballast to maintain a constant current.

Cooper-Hewitt had not been the first to use mercury vapor for illumination, as earlier efforts had been mounted by Way, Tube light working principle, Arons, and Bastian and Salisbury.

This lamp used quartz in tube light working principle of glass to allow higher operating temperaturesand hence greater efficiency. Although its light output relative to electrical consumption was better than that of other sources of light, the light it produced was similar to that of the Cooper-Hewitt lamp in that it lacked the red portion of the spectrum, making it unsuitable for ordinary lighting.

Working Principle of a Tube Light

Neon lighting The next step in gas-based lighting took advantage of the luminescent qualities of neontube light working principle inert gas that had been discovered in by isolation from the atmosphere. Neon glowed a brilliant red when used in Geissler tubes.

Neon tube lighting, tube light working principle also includes the use of argon and mercury vapor as alternative gases, came to be used primarily for eye-catching signs and advertisements. Sputtering occurred when ionized particles struck an electrode and tore off bits of metal.

The development of the neon light also was significant for the last key element of the fluorescent lamp, its fluorescent coating.

On which principle does a tube light work? - Quora

In Jacques Risler received tube light working principle French patent for the application of fluorescent coatings to neon light tubes. This, however, was not the first use of fluorescent coatings; Becquerel had earlier used the idea and Edison used calcium tungstate for his unsuccessful lamp.

A German patent was granted but the lamp never went into commercial production. Commercialization of fluorescent lamps[ edit ] All the major features of fluorescent lighting were in place at the end of the s.

Fluorescent lamp - Wikipedia

Decades of invention and development had provided the key components of fluorescent lamps: At this point, intensive development was more important than basic research. InArthur Comptona renowned physicist and GE consultant, reported to the GE tube light working principle department on successful experiments with fluorescent lighting at General Electric Co.

Stimulated by this report, tube light working principle with all of the key elements available, a team led by George E.