8 Terms
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Lighting products
Industry: Lights & lighting
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Lighting products
Bottom exit (BE)
Lights & lighting; Lighting products
(LFL plug-in ballasts) A configuration with leads or a wire-trap on the bottom or base of the ballast. This type of configuration is usually used when the ballast is mounted onto a junction box ...
Bottom exit studs (BES)
Lights & lighting; Lighting products
(LFL plug-in ballasts) A configuration with screw studs mounted on the base plate or bottom of the ballast. The screws are 3/8" inches long with a #8-32 thread size (#8-32 nut). They are mounted on a ...
Brightness
Lights & lighting; Lighting products
Brightness can refer to any of several technical terms used in lighting and is, therefore, ambiguous (See LUMINANCE).
Bulb
Lights & lighting; Lighting products
A loose way of referring to a lamp. "Bulb" refers to the outer glass bulb containing the light source.
Bulb material or coating
Lights & lighting; Lighting products
The type of glass (or quartz) used in the glass envelope surrounding the light source. The material can also have coatings applied to achieve particular performances.
Bulb size
Lights & lighting; Lighting products
Bulb shape followed by its size (the maximum diameter of the bulb expressed in eighths of an inch). For Compact Fluorescent products, "S", "D", "T", and "Q" are used to represent Single, Double, ...
Candela (cd)
Lights & lighting; Lighting products
The measure of luminous intensity of a source in a given direction. The term has been retained from the early days of lighting when a standard candle of a fixed size and composition was defined as ...
