Lights & lighting

Lights & lighting

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

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Lights & lighting > Lighting products

candlepower distribution curve

Lights & lighting; Lighting products

A graphical presentation of the distribution of light intensity of a light source, usually a reflector lamp or luminaire.

capacitor

Lights & lighting; Lighting products

Device in ballast that stores electrical energy. Often used for power factor correction and lamp regulation.

case quantity or standard package quantity

Lights & lighting; Lighting products

Number of product units packed in a master case. Also known as Standard Package Quantity.

cathode

Lights & lighting; Lighting products

Metal filaments that emit electrons in a fluorescent lamp. Negatively charged free electrons emitted by the cathode are attracted to the positive electrode (anode), creating an ...

cathode resistance

Lights & lighting; Lighting products

Resistance of the cathode in a Fluorescent lamp. It is measured "cold" before the lamp is turned on (Rc) or "hot" after the lamp is turned on (Rh). The ratio of the hot resistance ...