Light+Vocabulary

Ballast type used to operate lamp in accordance with ASNI standard.
 * ANSI Ballast Type**

Sound generated by the vibration of laminations in the iron core of the transformer or inductor present in the ballast.
 * Ballast Hum**

**Biax®** GE trademark for its biaxial family of high-efficiency and long-life __ [|compact fluorescent lamps] __. A straight tube is bent back in the middle, constituting a biaxial tube.

Refers to the luminous intensity at the center of the beam of a blown or pressed reflector lamp (such as a PAR lamp). Measured in candelas.
 * Center Beam Candlepower (CBCP)**

The measurement of light and related quantitie
 * Photometry**


 * Baffle**: in lighting this is usually a grooved surface that deflects and controls the “flow” of light to soften it and minimize reflected glare.


 * Basket Troffer**: a troffer whose light sources are concealed by curved opaque shielding called "baskets", which are often perforated with a pattern of small holes.


 * Cathode**: an electrode that emits electrons. A __ [|fluorescent lamp] __ cathode emits or discharges electrons to the cathode at the other end of the lamp (light bulb).
 * Chandelier**: a chandelier is often the focal point of the dining room. As such it should be hung about 30 inches above the tabletop and should be at least 6 inches narrower than the table on each side.


 * PAR Lamp**: PAR is an acronym for a parabolic aluminized reflector.