NCIDQ IDFX Chapter 15 Lighting Exam |
Questions and Answers | Verified Solutions | 2026
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Practice questions for this set
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HID lamp with special ceramic material that resists attack of hot sodium. Most
efficient lamps and long lamp life but they produce a very yellow light. Can
get a CRI up to 70
Choose an answer
1 light 2 contrast
3 High pressure sodium lamps 4 illumenance
Don't know?
Terms in this set (87)
, light visibly evaluated radiant energy
visible light a form of electromagnetic radiation with
wavelengths that range from
400(red)-700nm)violet) White light produced when
source emits equal quantities of energy
Candlepower (cp) Unit of luminous intensity approximately equal to
the horizontal light output from an ordinary wax
candle
lumen (lm) =brightness
the unit of luminous flux equal to the flux in a unit
solid angle of one steradian from a uniform point
source of one candlepower
illumenance the density of luminous flux incident on a surface in
lumens per area
lunimance also aka brightness
luminous flux per unit of projected area and unit
solid leaving a surface, either reflected or
transmitted. Takes into account the reflectance and
transmittance properties of materials and direction
they are viewed.
luminous intensity the solid angular flux density in a given direction
measured in candlepower or candelas
direct glare results when a light source in the field of vision
causes discomfort and interference with the visual
task
Questions and Answers | Verified Solutions | 2026
Edition | Pass Guaranteed
Save
Practice questions for this set
Learn 1 /7 Study using Learn
HID lamp with special ceramic material that resists attack of hot sodium. Most
efficient lamps and long lamp life but they produce a very yellow light. Can
get a CRI up to 70
Choose an answer
1 light 2 contrast
3 High pressure sodium lamps 4 illumenance
Don't know?
Terms in this set (87)
, light visibly evaluated radiant energy
visible light a form of electromagnetic radiation with
wavelengths that range from
400(red)-700nm)violet) White light produced when
source emits equal quantities of energy
Candlepower (cp) Unit of luminous intensity approximately equal to
the horizontal light output from an ordinary wax
candle
lumen (lm) =brightness
the unit of luminous flux equal to the flux in a unit
solid angle of one steradian from a uniform point
source of one candlepower
illumenance the density of luminous flux incident on a surface in
lumens per area
lunimance also aka brightness
luminous flux per unit of projected area and unit
solid leaving a surface, either reflected or
transmitted. Takes into account the reflectance and
transmittance properties of materials and direction
they are viewed.
luminous intensity the solid angular flux density in a given direction
measured in candlepower or candelas
direct glare results when a light source in the field of vision
causes discomfort and interference with the visual
task
