Lights & lighting

Lights & lighting

Any device used for illumination, either for practical use or deliberate aesthetic effect.

6Categories 9163Terms

Add a new term

Contributors in Lights & lighting

Become a Contributors

Lights & lighting > Lighting products

atmosphere

Lights & lighting; Lighting products

This field designates the type of gas or vacuum filling a volume or chamber of the lamp. This chamber might contain a filament or it might refer to the bulb which contains the arc ...

auto rest shutdown circuit

Lights & lighting; Lighting products

Circuit senses lamp end life and will automatically shut off power to the lamp(s). When a new lamp is inserted in the socket, the ballast resets, and turns on the lamp ...

ballast

Lights & lighting; Lighting products

An auxiliary piece of equipment required to start and to properly control the flow of current to gas discharge light sources such as fluorescent and high intensity discharge (HID) ...

ballast efficacy factor (BEF)

Lights & lighting; Lighting products

Defined as ballast factor divided by input watts. The value is used to evaluate various lighting systems based on light output and power input. The BEF can only be used to compare ...

ballast factor (BF)

Lights & lighting; Lighting products

This is the percentage of a lamp's rated lumen output that can be expected when operated on a specific, commercially available ballast. Note that the "rated output" is sometimes ...