4 Terms
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Lighting products
Industry: Lights & lighting
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Lighting products
Candlepower
Lights & lighting; Lighting products
An obsolete term for luminous intensity; current practise is to refer to this simply as candelas.
Candlepower (mean spherical)
Lights & lighting; Lighting products
Initial mean spherical candlepower at the design voltage. Mean spherical candlepower is the generally accepted method of rating the total light output of miniature lamps. To convert this rating to ...
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 electric current ...
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 to the cold ...
