BUILDING UTILITIES
Class COMPRE
EXAM FINALS MIDTERMS
Status Not started
Subject BUILDING UTILITIES
DIFFUSION - A scattered reflection of light from an irregular surface or an
erratic dispersion through a translucent material
BAFFLE - Anything physical or an environment that interferes with
communication or listening. A poor acoustical environment can be a barrier
to good listening and especially so for persons with a hearing impairment
LUMINOUS FLUX - The rate of flow of visible light per unit time expressed
in lumens
DEFLECTION - The distance an elastic body or spring moves when
subjected to a static or dynamic force. Typical units are inches or mm.
LOUDNESS - The physical resonance to sound pressure and intensity
SODIUM LAMP - A high intensity discharge lamp producing light by means
of an electric discharge in sodium vapor
INTENSITY - The energy expended during the sound wave vibration
INCANDESCENT LIGHTING - A type of light which gives yellow light; the
filament inside the bulb provides a small, concentrated glow of light when
an electric current heat the filament to the glowing point
BUILDING UTILITIES 1
, WAVELENGTH - The distance between two identical positions in the cycle
or wave
DECORATIVE LIGHTING - A lighting method that makes used of lights to
develop different moods/accent objects for interest
ECHO - Reflected sound producing a distinct repetition of the original
sound.
VALANCE - Long source of light over a window; its light illuminated the wall
and draperies for spacious effect
FREQUENCY - The number of oscillations or cycles per unit of time
HIGH-PRESSURE-SODIUM (HPS) - A type lamp generally used for
roadways and sidewalks, uses sodium gas.
ACOUSTICS - The branch of physics that treats the phenomena and laws of
sounds as it effects people
MERCURY LAMP - A type of lamp popular for lighting commercial interiors,
uses argon gas to ease starting, it produces light by means of an electric
discharge in mercury vapor. It is a high intensity discharge lamp producing
light by means of an electric discharge in sodium vapor
SPEECH INTELLIGIBILITY - The percentage of speech heard correctly by
the listener
TUNGSTEN HALOGEN LAMP - A type of lamp which produces light by
means of the reaction of halogen additive in the bulb reacts with chemically
with tungsten. It is a tungsten lamp having a quartz bulb containing a small
amount of halogen that vaporizes on heating and redeposit any evaporated
tungsten particles back onto the filament.
LOUDNESS - Measured by the strength of the sound, depicted as a sine
wave above and below the normal atmospheric pressure
ULTRASOUND - Sounds of a frequency higher than 20,000 Hz
LUMINOUS EFFICACY - The measure of the effectiveness with which a
lamp converts electric power into luminous flux, equal to the ratio of flux
emitted to power input and expressed in lumens per watt.
REVERBERATION - The time taken for sound to decay 60 dB to 1/1,000,000
of its original sound level after the sound source has stopped.
BUILDING UTILITIES 2
Class COMPRE
EXAM FINALS MIDTERMS
Status Not started
Subject BUILDING UTILITIES
DIFFUSION - A scattered reflection of light from an irregular surface or an
erratic dispersion through a translucent material
BAFFLE - Anything physical or an environment that interferes with
communication or listening. A poor acoustical environment can be a barrier
to good listening and especially so for persons with a hearing impairment
LUMINOUS FLUX - The rate of flow of visible light per unit time expressed
in lumens
DEFLECTION - The distance an elastic body or spring moves when
subjected to a static or dynamic force. Typical units are inches or mm.
LOUDNESS - The physical resonance to sound pressure and intensity
SODIUM LAMP - A high intensity discharge lamp producing light by means
of an electric discharge in sodium vapor
INTENSITY - The energy expended during the sound wave vibration
INCANDESCENT LIGHTING - A type of light which gives yellow light; the
filament inside the bulb provides a small, concentrated glow of light when
an electric current heat the filament to the glowing point
BUILDING UTILITIES 1
, WAVELENGTH - The distance between two identical positions in the cycle
or wave
DECORATIVE LIGHTING - A lighting method that makes used of lights to
develop different moods/accent objects for interest
ECHO - Reflected sound producing a distinct repetition of the original
sound.
VALANCE - Long source of light over a window; its light illuminated the wall
and draperies for spacious effect
FREQUENCY - The number of oscillations or cycles per unit of time
HIGH-PRESSURE-SODIUM (HPS) - A type lamp generally used for
roadways and sidewalks, uses sodium gas.
ACOUSTICS - The branch of physics that treats the phenomena and laws of
sounds as it effects people
MERCURY LAMP - A type of lamp popular for lighting commercial interiors,
uses argon gas to ease starting, it produces light by means of an electric
discharge in mercury vapor. It is a high intensity discharge lamp producing
light by means of an electric discharge in sodium vapor
SPEECH INTELLIGIBILITY - The percentage of speech heard correctly by
the listener
TUNGSTEN HALOGEN LAMP - A type of lamp which produces light by
means of the reaction of halogen additive in the bulb reacts with chemically
with tungsten. It is a tungsten lamp having a quartz bulb containing a small
amount of halogen that vaporizes on heating and redeposit any evaporated
tungsten particles back onto the filament.
LOUDNESS - Measured by the strength of the sound, depicted as a sine
wave above and below the normal atmospheric pressure
ULTRASOUND - Sounds of a frequency higher than 20,000 Hz
LUMINOUS EFFICACY - The measure of the effectiveness with which a
lamp converts electric power into luminous flux, equal to the ratio of flux
emitted to power input and expressed in lumens per watt.
REVERBERATION - The time taken for sound to decay 60 dB to 1/1,000,000
of its original sound level after the sound source has stopped.
BUILDING UTILITIES 2
