Illumination and Lighting Flashcards

(100 cards)

1
Q

Daylight. Achieved by using windows, skylights or light shelves.

A

Natural light

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2
Q

Light form electrical source

A

Artificial right

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3
Q

Direct replacement of natural light. Provides uniform level of illumination. Also known as ambient lighting

A

General Lighting

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4
Q

High level of illumination over a small area, with a surrounding area of lower intensity from spill light. Lamps

A

Local Lighting

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5
Q

Intended for the users to perform specific tasks

A

Task Lighting

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6
Q

Reveals, color, texture, and form. Purely aesthetic

A

Accent Lighting

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7
Q

Used to emphasize an object by illuminating with a strong light

A

Highlight

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8
Q

Illuminates something from behind in order to enhance depth. Separates subject from its background

A

Backlight

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9
Q

Light coming from the side

A

Sidelight

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10
Q

Diffused light that produces a little contrast

A

Soft Light

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11
Q

Direct light that produces high contrast

A

Hard Light

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12
Q

Light that provides visual information for safety and comfort

A

Information Lighting

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13
Q

90% to 100% of light directed towards ceiling and upper walls of the room

A

Indirect

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14
Q

60% to 90% directed upwards; 40% to 10%% downwards

A

Semi- indirect

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15
Q

Equal distribution of light upwards and downwards

A

Direct- indirect

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16
Q

60% to 90% of light downwards; 40 to 10% upwards

A

Semi- direct

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17
Q

90% to 100% of light is directed downwards

A

Direct

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18
Q

Light distributed on all sides

A

General

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19
Q

Light source are shielded by a panel parallel to the wall and is attached to the ceiling

A

Cornice Lighting

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20
Q

Light source are shielded by a ledge to distribute light upwards over the ceiling

A

Cove lighting

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21
Q

Light sources are shielded by a panel parallel to the wall and usually across the top of a window . (Curtains)

A

Valance lighting

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22
Q

Various devices for producing light, either by electricity or gas

A

Lamp

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23
Q

Source of artificial light that works by incandescence. An electric lamp in which a filament encased in a bulb is heated to incandescence by an electric current through the lamp base until it emits visible light

A

Incandescent Lamp

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24
Q

Threadlike conductor of an electric lamp that is heated to incandescence by the passage of electric current

A

Filament

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25
The glass housing of a lamp
Bulb
26
Part of a bulb that connects to a lamp holder
Lamp base
27
Standard round shape bulb for general service incandescent lamp
A bulb
28
Flame shaped bulb for low wattage
B bulb
29
Cone shaped bulb for low wattage
C bulb
30
Candle- shaped bulb for low wattage
CA bulb
31
Reflector bulb of blown glass for high intensity discharge lamp
R bulb
32
Parabolic aluminized reflector bulb cast glass for high intensity discharge lamps
PAR bulb
33
Ellipsoidal reflector bulb
ER bulb
34
A bulb having a hemispherical reflective silver bowl
A/SB bulb
35
Globe shaped bulb
G bulb
36
Pear shaped bulb
PS bulb
37
Straight sided bulb
S bulb
38
- cheaper - instant start and restart - good color - high power
Advantages of incandescent lamp
39
- low efficacy - shorter life - produces more heat and light - high maintenance
Disadvantages of incandescent lamp
40
Also called quartz. Uses halogen gas cycle to prevent rapid depreciation of the lamp filament and darkening of the transparent envelop.
Tungsten- Halogen
41
A broad- beamed, high intensity bulb. Often used to illuminate outdoor playing fields.
Floodlight
42
Double ended and commonly used as security lighting. Should not touch bare skin because the human skin can reduce the life of the bulb
J type bulb
43
Low voltage bulb commonly found under counters, desk lamps or accent lighting. Skin contact can also damage the bulb
JC type bulb
44
Higher voltage bulb used in under- counter lighting, desk lamps and accent lights
JCD type bulb
45
Bulb used in food service industry
JDD type bulb
46
Small reflector floodlights that are commonly used in range hoods or as track lighting
JDR type bulb
47
Multifaceted reflector bulb for tungsten-halogen lamps. (MR16 bulb) originally for slide projectors but can be seen in retail and residential lighting.
MR bulb
48
Cylindrical glass tube sealed at both ends and containing a mixture of an inert gas, usually argon and mercury vapors.
Fluorescent Lamp
49
Emission of radiation, especially of visible light, by a substance when exposed to external radiation
Fluorescence
50
Known as T-bulb. Standard shape of fluorescent bulb. T12, T8, T5 and T4
Standard
51
Does not require a starter, have single pin bases
Slim-line
52
Doughnut shaped for circular luminaires
Circline
53
U shaped and used for square and rectangular luminaires
U-bent
54
Type of lamp designed to fit into roughly the same space as an incandescent lamp, but with the advantages of fluorescent lamp
Compact fluorescent lamp
55
Most popular type of fluorescent bulb
Spiral
56
Basically an A- shaped bulb
Incandescent shaped
57
Meant to be displayed. Such as in bathroom vanity fixture or a pendant light
Globe
58
The first CFL bulbs available to consumers
Tube
59
Cold cathode fluorescent lamp emitting a glow when a high voltage is applied across two electrodes in a glass filled tube. Used in neon signs
Neon vapor lamps
60
Light is produced when a high pressure electric arc is passed through a gas vapor
High intensity discharge lamps
61
Type of light that utilizes light- emitting diodes (LEDs). Reduced heat
Solid-state lighting
62
Surface for reflecting light heat
Reflector
63
Piece of material as lass or plastic having two opposite surfaces either or both of which are curved used in luminaire to focus , disperse, or collimate the emitted light
Lens
64
Translucent materials for filtering glare of a light source and distributing the light over an extended period of area
Diffuser
65
Grid type of optical assembly used to control light distribution from a fixture
Louver
66
Most common type of light fixture offering the greatest variety of designs
Suspended ceiling lights
67
Decorative lighting usually having branches supports for lamps
Chandelier
68
Lighting fixture that is suspended by a flexible cord by which it can be raised or lowered
Droplight
69
Droplight that is fixed and is suspended by a cord, wire, or chains
Pendant
70
Mounted light fixture that diffuses light into the room
Wall lights
71
Decoative wall bracket
Sconce
72
Bathes a wall in an even stream of light usually ceiling mounted, recessed into the ceiling or mounted on a lighting track
Wall washers
73
Ceiling mounted light that is not recessed
Ceiling lights
74
Provides directional in a downward stream. Normally recessed or semi- recessed
Downlights
75
Rectangular light fixture. Designed to accommodate fluorescent lights
Troffer lights
76
Fixture that sends light upward
Uplights
77
Adjustable luminaire that directs light at a controlled beam
Spotlight
78
Freestanding lighting fixture
Floor Lamps
79
Decorative lights that gives a soft glow. Can be used as bedside reading lights
Table lamps
80
Provides task lighting. Gives concentrated light to a specific area
Desk Lamp
81
Rigid flexible tape with exposed low- voltage light sources
Strip Lighting
82
Illuminates spaces with high ceilings, usually above 20ft in height. For workshops, factories and assembly lines
High bay lights
83
Design for visual impact and provides aesthetic stimulation and amusement
Visual Oddities
84
Intensity of light per unit area. Refers to man- made lighting
Illumination
85
Essential to provide task lighting giving a concentrated directional light to a specific area
Electric illumination
86
Light emanating from the object being viewed
Brightness
87
Difference in brightness between an object and its background
Contrast
88
Excessive luminance ration in the field of vision
Glare
89
Annoying brightness
Direct glare
90
More serious and difficult to control.
Indirect glare
91
Luminous flux per unit area
Quantity of light
92
Distribution of brightness in the lighting installation
Quality of light
93
Method which light is measured in english system
Footcandle
94
Method which light is measured in metric system
Lux
95
Measure of the total quantity of visible light emitted by a source. Unit of luminous flux
Lumen
96
Amount of energy it takes to produce a certain amount of light. Higher wattage, the brighter the light but also the more power it uses.
Watts
97
Measured in degrees of K (kelvin)
Color Temperature
98
2000K- 3000K
Warm white
99
3100K-4500K
Cool white
100
4600K- 6500K
Daylight