ILUMINACION

Question 1

VOCABULARIO

quality ligth-stabilized plastics used in making diffusers and lenses

Answer 1

arcrylic

Question 2

VOCABULARIO

recesses fixture supplies or returns air to or from a room

Answer 2

air-handling

Question 3

VOCABULARIO

surrounding envirometn of fixture or ballast

refers to temp. or sound conditions

Answer 3

ambient

Question 4

VOCABULARIO

auxiliary device used with flourescent, mercury vapor, metal haide & high pressure sodium lamps.

Answer 4

ballast

Question 5

VOCABULARIO

lumens containes within the beam spread of a floodligth

Answer 5

beam lumens

Question 6

VOCABULARIO

a term used to express candlepower

(cd)

Answer 6

candela

Question 7

VOCABULARIO

intensity of ligth given off by a ligthsource in a particular direction

(cp)

Answer 7

candlepower

Question 8

VOCABULARIO

upper, lower or intermediate zone of a room designated as ceiling, floor or room cavity

Answer 8

cavity

Question 9

VOCABULARIO

geometric proportios of the ceiling, floor and room cavities

(CR)

what is the formula?

Answer 9

cavity ratio

room length = room width

Question 10

VOCABULARIO

% of a light fixture that reaches the seeing task

(CU)

Answer 10

Coefficient of Utilization

Question 11

VOCABULARIO

% of ligth from a floodligth that reaches the seeing task relative to the beam lumens

(CU)

What are the factors?

Answer 11

coefficient of beam utilization
Factors:
Fixture effieciency, distribution and mounting height
Room proportions
Room- surface reflectances

Question 12

VOCABULARIO

see lens

Answer 12

diffuser

Question 13

VOCABULARIO

relationship of lamp lumens to watts required to generate the lumens and expresed as lumens per watt

Answer 13

efficacy

Question 14

VOCABULARIO

see luminaire efficiency

Answer 14

efficiency

Question 15

VOCABULARIO

amount of ligth in footcandles produced by luminous sphere on a seeing task in the center of the sphere that will render the same “seeability” as the raw footcandles render the same task in the sepcific seeing enviroments under consideration.

(ESI)

Answer 15

equivalent sphere ilumination

Question 16

VOCABULARIO

device that hold, protects and provides an optical system and power connections for the lamps

refferd to as interior ligthing

Answer 16

fixture

Question 17

VOCABULARIO

see lumens

Answer 17

flux

Question 18

VOCABULARIO

the amount of ligth falling of ona surface

(fc)

What is the formula?

Answer 18

footcandle
fc = lumens/square feet

Question 19

VOCABULARIO

unit of birgthness as detected by the eye

(lf)

Answer 19

foorlambert

Question 20

VOCABULARIO

excessive brightness either direct or indirect

Answer 20

glare

Question 21

VOCABULARIO

type of ceiling construction where the supporting members (inverted T’s) are exposed and the ceiling tiles and lighting fixtures are laid-in on the flanges of the t’s.

Answer 21

grid (lay-in)

Question 22

VOCABULARIO

industrial lighting where highmounting heights may be encountered

HID- type fixture

Answer 22

highbays

Question 23

VOCABULARIO

family of light source consisting of mercury vapor, metal haide and high pressure sodium lamps

for commercial spaces

Answer 23

high intensity discharge (HID)

Question 24

VOCABULARIO

line that is plotted ona graph or diagram to show all points on a surface where the illumination is the same

Answer 24

isolux

Question 25

# VOCABULARIO the accepted term for all commercial artificial ligthing sources

Answer 25

lamp

Question 26

# VOCABULARIO factor used in lighthing claculations to account for the light loss that thakes place in a lamp due ti the gradual decay in lumes output over a designates perios of burning time. (LLD)

Answer 26

lamp limern depreciation

Question 27

# VOCABULARIO the sheilding or diffuser portion of a fixture, made of plastic or glass through whcich ligth passes on its way to the seeing task.

Answer 27

lens

Question 28

# VOCABULARIO the packaged combination of fictures, ballasts, lapsd and sometimes ceilings.

Answer 28

ligthing system

Question 29

# VOCABULARIO a series if baffles used in place of a lens to sheild the lamps in a fixture form vier a certain angkes or to block unwantes ligth.

Answer 29

louver

Question 30

# VOCABULARIO used to indicate the total amount of ligth given off by a light source (lm)

Answer 30

limen

Question 31

term for fixture

Answer 31

luminare

Question 32

# VOCABULARIO factor used in lighting calculations to account for the ligths loss due to the amount of dirt on the luminare (LDD)

Answer 32

Luminaire dirt depreciation

Question 33

the lumens emmites by a luminaire deivided by the lumens generated by the luminaires lapm

Answer 33

lumianire efficieny

Question 34

# VOCABULARIO photometric brightness

Answer 34

luminance

Question 35

metercandle (lx)

Answer 35

lux

Question 36

# VOCABULARIO % allowance for the decline in the effectiveness of a light fixture (MF)

Answer 36

maintence factoe

Question 37

# VOCABULARIO metric equivalent of footcandle (lux, lx) ## Footnote What are the formulas?

Answer 37

meter candle lx = luemnsa/ square meters 1 footcandle = 10.76 lux 1 lux = 0.0929 footcandles

Question 38

# VOCABULARIO lamp cavity or enviroment designedas part of the light fixture for the purpose of controlling the output

Answer 38

optical system

Question 39

# VOCABULARIO certain low brightness louver and reflectos shapes as derives from the geometric shape (curve) called a parabola where if a light source is places at its focal point, the resultant emitted light will be redirectes parallel to the parabolas geometric axis.

Answer 39

parabotic

Question 40

# VOCABULARIO space between the structural ceiling slab and the finished ceiling

Answer 40

plenum

Question 41

# VOCABULARIO a dielectric substance used in ballast capacitators (PCB)

Answer 41

polychlorinates biphenyl

Question 42

# VOCABULARIO fixture mounted in ceiling opening so that the housing of the fixtures is hidden from view

Answer 42

recessed

Question 43

# VOCABULARIO device used to redirected ligth from a source by the process of reflection

Answer 43

reflector

Question 44

# VOCABULARIO device used to redirect ligth from a source by the process of refraction

Answer 44

refractor

Question 45

# VOCABULARIO see lens or louver

Answer 45

shielding

Question 46

# VOCABULARIO fixture with so air-handling provisions

Answer 46

static

Question 47

# VOCABULARIO generic term for family of plastic used in the making of diffusers and lenses

Answer 47

styrene (polystyrene)

Question 48

# VOCABULARIO any fixture mounted directly on a ceiling ia surface mounted

Answer 48

surface mounted

Question 49

# VOCABULARIO any fixture hung from a ceiling by supports (such as chains, hangers, or stems) is suspension or pendant mounted

Answer 49

suspension or pendant mounted

Question 50

# VOCABULARIO a recessed ligthing fixture

Answer 50

troffer

Question 51

# VOCABULARIO The plane at which level work is usually performed and at which the illumination is specified and measured.

Answer 51

work plane

Question 52

# VOCABULARIO an empirical comfort rating system for fixtures as measured in various proportioned rooms at different mounting heigths. (VCP)

Answer 52

visual comfort probability

Question 53

# VOCABULARIO a surface or suspension mounted fixture with one piece plastic lens that encloses the lamp compartment on both sided and across the bottom, literally wrapping the lamps (wrap)

Answer 53

wraparound

Question 54

# VOCABULARIO the lastes and most advanced method by used the ligthing industry in the determetion of coefficient of utilization of various fixtures

Answer 54

zonal cavity

Question 55

# LAMPARAS DE PIE Y DE MESA bottom of shade at eye level when seated

Answer 55

aprox. 40"-42" off floor

Question 56

# LAMPARAS DE PIE Y DE MESA bottomof shade sewing, piano

Answer 56

minimum 47"

Question 57

# LAMPARAS DE PIE Y DE MESA When both of the shade is above eye level, lamp stem should be about ____ behind shoulder - near rear corner of chair

Answer 57

10"

Question 58

# LAMPARAS DE PIE Y DE MESA minimum height to shade bottom from desk top

Answer 58

15"

Question 59

# LAMPARAS DE PIE Y DE MESA 1. space between wallwashers 2. space from desk to bottom shade

Answer 59

1. 30" 2. 14"

Question 60

# LAMPARAS DE PIE Y DE MESA 1.space between table lamps 2. space from desktop to bottom shade (stading up) 3. space from desktop to bottom shade (sittind down)

Answer 60

1. 36" 2. 22" 3. 15"

Question 61

# TEMPERATURA Standard incandecente: 1.Color temperature 2.color index (CRI) 3.Characteristica

Answer 61

1.2750-3400k 2.95+ 3.war, standard ligth source, reatively inefficient

Question 62

# TEMPERATURA Tungsten Halogen: 1.Color temperature 2.color index (CRI) 3.Characteristica

Answer 62

1. 2850-3000k 2. 95+ 3. Brighter, whiter than standar incandecent, more efficient than regular incandecent.

Question 63

# TEMPERATURA Flourecent: 1.Color temperature 2.color index (CRI) 3.Characteristica

Answer 63

1.2700-6300K 2.48 to 90 3.wide selection of phosphor colors - warm to cool 4.high efficiency 5.longer life