NCIDQ Flashcards
The overall light for the space
ambient lighting
indicates whether a lamp has a warm, midrange, or cool color appearance
color temperature
the measurement of the amount of light falling on a surface
illuminance
placing recessed lights close to the wall to enhance the appearance or texture of the wall
grazing
within 12”
lighting specific to an individual person or area
task lighting
light sources have this rating based on their predominant wavelength color, typically ranging from 2000K to 9000K
Kelvin
LED
light emitting diodes
published standards and design guidelines for best practice from the Illuminating Engineering Society of North America
IES Lighting Handbook
CRI
color rendering index
the measurement of how much light is directed at a specific object when it is 12 inches away
footcandle
the ability of a light source to accurately reproduce the colors of the object it illuminates
color rendering index
IBC requirements for minimum maintained illuminance on the interior path of egress emergency lighting, ___ footcandle average
1fc
shortest wavelength of visible light
violet
a private organization which tests and lists electrical equipment for electrical and fire safety
UL Underwriters Laboratories
the perception of brightness of the light reflected off a surface
luminance
the type of lamp that is best for a jewelry display
display niche with glass box
MR-16
the unit of measurement of the total amount of visible light output from a source
lumen
the measurement of luminous intensity, in a given direction, of a light source
candela
units used for the measurement and
description of the brightness of a direct glare source are
candela per square meter
when sound is reflected from a surface and scattered evenly back into the room
diffusion
The rating that indicates the transmission of sound through construction materials
STC
The reduction of sound transmission through a space or between rooms
attenuation
measurement of the amount of sound absorbed upon striking a particular surface
NRC
The process by which a material, or object takes in sound energy when sound waves are encountered (as opposed to reflection the energy)
absorption
the prolongation of sound as it repeatedly bounces off hard surface
reverberation
a measurement of the amount of sound energy absorbed upon striking a particular surface
NRC
ratio of sound intensity absorbed by the material to the total intensity reaching the material
coefficient of absorption
