- 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.
A popular term for a compact fluorescent lamp which includes a built-in ballast (See CFL).
Industry:Lights & lighting
Formula stating that if you double the distance from the light source, the light level goes down by a factor of 4, if you triple the distance, it goes down by a factor of 9, and so on.
Industry:Lights & lighting
A plot with lines connecting points of equal luminous intensity around a source.
Industry:Lights & lighting
A line plotted to show points of equal illuminance (lux or footcandles) on a surface illuminated by a source or sources.
Industry:Lights & lighting
A unit of temperature starting from absolute zero, parallel to the Celsius (or Centigrade) scale. 0C is 273K.
Industry:Lights & lighting
The standard measure of electrical energy and the typical billing unit used by electrical utilities for electricity use. A 100-watt lamp operated for 10 hours consumes 1000 watt-hours (100 x 10) or one kilowatt-hour. If the utility charges $.10/kWh, then the electricity cost for the 10 hours of operation would be 10 cents (1 x $.10)
Industry:Lights & lighting
Layers of steel, making up the "core" that is surrounded by the coils in a core & coil ballast.
Industry:Lights & lighting
The term used to refer to the complete light source package, including the inner parts as well a the outer bulb or tube. "Lamp", of course, is also commonly used to refer to a type of small light fixture such as a table lamp.
Industry:Lights & lighting
Ratio of peak lamp current to RMS or average lamp operating current.
Industry:Lights & lighting
