- 行业: Energy
- Number of terms: 8202
- Number of blossaries: 3
- Company Profile:
American conglomerate currently ranked by Forbes as the world's largest company. GE has multifarious business interests including power generation and financial services.
Unità di illuminamento o di luce che cade su una superficie. Un lux è pari a un lumen per metro quadrato. Dieci lux equivale a circa un footcandle. (Vedi FOOTCANDLE)
Industry:Lights & lighting
multiplo integrale della frequenza fondamentale (60 hz) che diviene una componente della corrente
Industry:Lights & lighting
For electrical discharge lamps, this is the voltage measured across the discharge when the lamp is operating. It is governed by the contents of the chamber and is somewhat independent of the ballast and other external factors.
Industry:Lights & lighting
An inorganic chemical compound processed into a powder and deposited on the inner glass surface of fluorescent tubes and some mercury and metal-halide lamp bulbs. Phosphors are designed to absorb short wavelength ultraviolet radiation and to transform and emit it as visible light (See FLOURESCENCE).
Industry:Lights & lighting
Measurement of the relationship between the AC source voltage and current. High power factor ballasts require less AC operating current at the same wattage than an equivalent low power factor ballast. Formula: Power Factor equals Input Watts divided by the product of Line Volts times Line Amps (Volt Amps or VA).
Industry:Lights & lighting
A general term for the release of energy in a "wave" or "ray" form. All light is radiant energy or radiation, as is heat, UV, microwaves, radio waves, etc.
Industry:Lights & lighting
The ratio of light reflected from a surface to that incident upon it.
Industry:Lights & lighting
Radiant energy in the range of about 100-380 nanometers (nm). For practical applications, the UV band is broken down further as follows: Ozone-producing - 180-220 nm; Bactericidal (germicidal) - 220-300; Erythemal (skin reddening) - 280-320; "Black" light - 320-400. The International Commission on Illumination (CIE) defines the UV band as UV-A (315-400 nm); UV-B (280-315 nm) and UV-C (100-280 mm).
Industry:Lights & lighting
