Lighting products

Lighting products

Industry: Lights & lighting

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Lighting products

glare

Lights & lighting; Lighting products

Visual discomfort caused by excessive brightness is called discomfort glare. If task performance is affected it is called disability glare. Glare can be direct glare or indirect (reflected) glare ...

halogen lamp

Lights & lighting; Lighting products

A halogen lamp is an incandescent lamp with a filament that is surrounded by halogen gases, such as iodine or bromine. Halogen gases allow the filaments to be operated at higher temperatures and ...

harmonic

Lights & lighting; Lighting products

An integral multiple of the fundamental frequency (60 Hz) that becomes a component of the current.

Distortion of an AC waveform caused by multiples of the fundamental frequency (harmonics). Odd triplet harmonics (thirds, ninths, etc.) may result in large currents on the neutral line in a four-wire ...

hertz (Hz)

Lights & lighting; Lighting products

Unit used to measure frequency of alteration of current or voltage

high efficiency (energy saving) electromagnetic ballast

Lights & lighting; Lighting products

Ballast with core & coils, designed to minimize ballast losses compared to the "standard" ballast.

high intensity discharge (HID) lamp

Lights & lighting; Lighting products

A general term for mercury, metal halide (GE ConstantColor® CMH®, Multi-Vapor®, MXR or Arcstream®) and high-pressure sodium (GE Lucalox®) lamps. HID lamps contain compact arc tubes which enclose ...