Lighting Flashcards
What lamps are more efficient than incandescent lamps but are not used extensively outdoors, except for underpasses, tunnels and signs? They pass electricity through gas enclosed in a glass tube.
Fluorescent
What lamps are incandescent lamps filled with halogen gas and provide about 25 percent better efficiency and life than ordinary incandescent bulbs?
Halogen and quartz halogen.
What lamps produce light by passing a current through a gas, take several minutes to produce full light output and have a poor color rendition for video surveillance, but have a long life?
Mercury Vapor
What lamps are often used at sports stadiums because they best imitate daylight, work well with video surveillance systems by providing accurate color rendition, but are the most expensive to install and maintain?
Metal Halide
What lamps are energy efficient and have a long life span, but poor color rendition for video surveillance?
High-pressure sodium. Their particular quality of light enables people to see more detail at greater distances in fog, so they are often used on streets or in parking lots.
What lamps are more efficient than high-pressure sodium, but are expensive to maintain and provide poor color rendition?
Low-pressure sodium.
What lamps have a long life and are utilized mainly indoors, except for parking structures, underpasses, and tunnels?
Induction
What lamps provide a cost-effective alternative that lasts longer, without sacrificing illumination?
LED (light-emitting diodes).
What lamps are the least efficient, the most expensive, and have a short life span?
Incandescent
What general security lighting equipment projects a downward circular pattern of illumination?
Streetlight
What general security lighting equipment uses a very narrow high-intensity beam of light to concentrate on a specific area?
Searchlight
Security light equipment category that projects a medium to wide beam on a larger area?
Floodlight
Security light equipment category that typically projects a narrow, horizontal beam that can be used to illuminate potential intruders while leaving security personnel concealed?
Fresnel
Security light equipment category that is utilized mainly in parking lots and along highways and usually varies in heigt from 70 to 150 feet?
High mast lighting