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Lighting Essentials I

Horizontales
This employs vertical fenestration to introduce natural light
Index that describes the quality of a light source on a scale of 0 to 100
The number of layers of light that designers must understand
The process by which lamps are operated at less than full intensity
A semiconductor device that emits visible light
Light is a part of the ___________ radiation spectrum
Typically used to highlight vertical surfaces and three-dimensional objects
This type of light is present only during the middle of the day and causes skin to generate vitamin D
The color _________ of a light source describes whether a light appears warm, neutral, or cool
The amount of ________ available should be evaluated so that opportunities to reduce artificial lighting can be realized.
Used to illuminate specific tasks that are performed in a space
This provides the background lighting that helps create the mood of a space
Verticales
______-______ discharge lamps generate light by passing an electric current through a gas containing the vapors of certain metals
This evaluates how much of a light is lost by the end of a lamp's life
Lamps that glow due gas inside the lamp generating UV energy which is absorbed by a phosphor coating and converted to visible light
The energy efficiency of a light source
Type of lamps that generate light when an electric current heats the lamp's tungsten filament until it glows
The total operating time at which 50 percent of a large group of lamps is expected to fail
And approach whereby only one luminaire or group of similar luminaires is designed to provide all task and ambient lighting
These types of fixtures can provide a desirable eye-level glow that is missing from spaces lighted only from the ceiling.
Lighting ______ give spaces variety and interest and often work together to light portions of a space
Lamps that are similar to incandescent except they contain a small amount of gas withing the glass bulb that impedes the evaporation of tungsten