Lighting Flashcards
What is a fluorescent light and where is it commonly used?
Tubular lights that contain mercury, must use ballast to maintain the current at a desired and constant value
Highly efficent, more efficient than incandescent
efficiency - 50-80 lumens/watt
Common in offices, classrooms, librarys; general lighting purposes
Light Emitting diode (LED) efficiency, life span, commonly used for?
Strips of lighting with smaller dots/pixels, mixing of colors
Efficiency - **long life span **
Used in commercial applications, widely used for** task lights, step lights, exit signs**
Incandescent Lighting what do they consist of, what is the efficiency, etc?
Typical light bulb with a small wire/needles in loops (filament)
Contains filament that gives off light when heated with electric current
Typical bulb filled with inert gas mixture such as** argon or nitrogen**
Low Efficiency - 5-20 lumens/watt
typically have high CRI value
Tungsten Halogen
A type of incandescent lamp with halogen gas
Very high CRI but is inefficient
High pressure sodium (HPS)
Also known as high intensity lighting
-Usually used for** street lamps**
includes mercury lamps, metal halide lamps (good CRI)
-Ass efficient as an incandescent light
Metal Halide Lamps
have high CRI
A type of HID (high intensity Dishcarge lamp)
High pressure sodium lamp
Type of HID Lamp
- longest life span
Low pressure sodium
Type of HID lamp
- most efficient but yellow
Which light contains nitrogen or argon?
Incandescent lighting
Which light contain mercury?
Fluorescent lighting
Compact Fluorescent lighting
- have tubular loops or spirals can be used as a light built with a lamp vs commercial ceiling tiles
- residential
Which two lighting has the better CRI?
A. INCANDESCENT
B. COOL-WHITE DELUXE FLOURESCENT
C. WARM WHIT DELUX FLOURESCENT
D. COOL-WHITE FLOURESCENT
E. WARM-WHITE FLOURESCENT
A. INCANDESCENT
B. COOL-WHITE DELUXE FLOURESCENT
