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Building Utilities 3
Building U3 "Lighting Design"
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Cards (29)
It is a electromagnetic radiation that is unaided human eye can perceive
LIGHT
It is a radiant energy that originates from the sun
natural
light
It is the utilization of either natural or artificially generated light
Lighting
Learn how to manipulate building forms, glazing, lighting fixture and lamps
TRUE
use light in a meaningful way
TRUE
it is the visual experience of seeing and interpreting
vision and perception
3 assessing abilities
detection
,
recognition
,
identification
branch of physics that relates the property of light and function of vision
optics
studies the human visual systems
optics
this is the amount of light transmitted or emitted throug an object in a specific angle
Luminance
unit of luminous intensity equals to 1 candlepower
candela
the percentage of light which is radiated from a surface
reflectance
the quantity of light which reach the surface
Illuminance
quantity of light on 1 square feet away from the light source of 1 candela
footcandle(fc)
metric unit of footcandle
lux(lx)
Designer should understand these concept: Object characteristics, visual tasks, visual ability, object visibility, size of object
TRUE
The relationship between brightness of an object to it surroundings
contrast
brightness difference for comfortable contrast
Luminance Ratio
following limits for luminance ratio 2:1
noticeable
following limits for luminance ratio 3:1
distinct
following limits for luminance ratio 10:1
strong
following limits for luminance ratio 40;1
emphatic
following limits for luminance ratio 50;1
overwhelming
a bright light that can interfere with visual perception
glare
a bright source directly in the field of vision
direct glare
from a polished surface which reflects
reflected glare
a mixture of all colors in the visible spectrum
white light
not visible but damages tissue materials
UV
The percentage of incident light that is reflected from a surface
Reflectance