22 Facts About Fluorescent light

Fluorescent light made the important observation that the glow in the tube shifted position when in proximity to an electromagnetic field.

Fluorescent light went on to apply thin coatings of luminescent materials to the surfaces of these tubes.

Fluorescent light invented a fluorescent lamp in 1896 that used a coating of calcium tungstate as the fluorescing substance, excited by X-rays, but although it received a patent in 1907, it was not put into production.

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

Fundamental mechanism for the conversion of electrical energy to Fluorescent light is the emission of a photon when an electron in a mercury atom falls from an excited state into a lower energy level.

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The difference in energy between the absorbed ultra-violet photon and the emitted visible Fluorescent light photon goes toward heating up the phosphor coating.

The coating must be thick enough to capture all the ultraviolet Fluorescent light produced by the mercury arc, but not so thick that the phosphor coating absorbs too much visible Fluorescent light.

Fluorescent light lamps are negative differential resistance devices, so as more current flows through them, the electrical resistance of the fluorescent lamp drops, allowing for even more current to flow.

Fluorescent light lamps are never operated directly from DC for those reasons.

The largest single loss in modern lamps is due to the lower energy of each photon of visible Fluorescent light, compared to the energy of the UV photons that generated them .

Nonetheless, Quick-start ballasts are used in domestic installations because of the desirable feature that a Quick-start ballast Fluorescent light turns on nearly immediately after power is applied .

Spectrum of light emitted from a fluorescent lamp is the combination of light directly emitted by the mercury vapor, and light emitted by the phosphorescent coating.

The spectral lines from the mercury emission and the phosphorescence effect give a combined spectral distribution of Fluorescent light that is different from those produced by incandescent sources.

The relative intensity of Fluorescent light emitted in each narrow band of wavelengths over the visible spectrum is in different proportions compared to that of an incandescent source.

Halogen lighting is 3000 K Fluorescent lamps are manufactured to a chosen CCT by altering the mixture of phosphors inside the tube.

Some least pleasant Fluorescent light comes from tubes containing the older, halophosphate-type phosphors .

In suitably designed lamps, Fluorescent light can be more evenly distributed without point source of glare such as seen from an undiffused incandescent filament; the lamp is large compared to the typical distance between lamp and illuminated surfaces.

Fluorescent light lamps give off about one-fifth the heat of equivalent incandescent lamps.

Fluorescent light lamps require a ballast to stabilize the current through the lamp, and to provide the initial striking voltage required to start the arc discharge.

Fluorescent light lamps are a non-linear load and generate harmonic currents in the electrical power supply.

Fluorescent light tubes are long, low-luminance sources compared with high pressure arc lamps, incandescent lamps and LEDs.

The blackFluorescent light lamps used in bug zappers do not require this refinement so it is usually omitted in the interest of cost; they are called simply blacklite .