14 Facts About Fluorescent bulb

Fluorescent bulb lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light.

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

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

Fluorescent bulb 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.

Electrons collide with and ionize noble gas atoms inside the Fluorescent bulb surrounding the filament to form a plasma by the process of impact ionization.

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

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

Fluorescent bulb use is declining as LED lighting, which is more energy efficient and doesn't contain mercury, is replacing fluorescents.

Fluorescent bulb lamps convert more of the input power to visible light than incandescent lamps.

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

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

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