Light n Stufff

Question 1

Electric Current?

Answer 1

Electric current is transported over long distances by a high voltage transmission, as it approaches its destination it is stepped down by transformers to 120 Volts ‘line voltage’. At this point, the current is connected to an electric meter and circuit panel (15 Amp)

Question 2

Energy Efficiency?

Answer 2

is predicted on high light production, or high light output

Question 3

Energy consumption required to operate a lamp?

1__ = 1000W

Answer 3

1 KILOWATT = 1000W

Question 4

Circuts are loaded to __% capasity

Answer 4

80%

Question 5

Brightness Perception?

Answer 5

Light is percieved as brightness fuck

Question 6

SPECTRAL COLOUR?

Answer 6

The visible light of the electromagnetic spectrum (the colour of light)

Question 7

PERCEIVED COLOUR:

Answer 7

reflected light, acting with or on the pigment of an object’s material

Question 8

PERCEIVED APPEARENCE affected by (3)

Answer 8

1) shade conditions 2) shadow conditions 3) highlight conditions

Question 9

LUMINOUS FLUX?

Answer 9

light output - expressed in LUMENS

Question 10

ILLUMINACE? huh?

Answer 10

is light that arrives at 1sq. ft. surface or task plan express in FOOTCANDLES. (1f.c. = 1 lm) of light density

Question 11

light is reflected in multiple directions on matte surface

Answer 11

diffuse reflection

Question 12

the result of opaque materials blocking light transmission and cast shadww

Answer 12

NO transmission DUHHH

Question 13

frosted glass is an example of? regular glass is an example of?

Answer 13

1) Diffused transmission 2) transmission

Question 14

light is reflected from a shiny surface in a pattern where the angle of incidence (arriving) is equal to the angle of exitance

Answer 14

specular reflection SPECTACULAR

Question 15

LUMINANCE?

Answer 15

is reflected light, measured in candelas the perceptual sensation of luminance is brightness perception

Question 16

how a light source will affect a surface colour is called?

Answer 16

Color Rendering Index

Question 17

Name the 3 main lamp types. Provide general description and how much heat they produce

Answer 17

1) Fluorescence: gasses in glass tubes, require a ballast, low heat producer
2) Incandescent: gasses in a bottle, with edison base, high heat producer
3) LED: “light emitting diode” energy released in the form of photons, huh?

Question 18

The difference between Uniform and Non-Uniform atmospheres??????!!!

Answer 18

NOTHINGGGG much other then that uniform atmosphers provide even luminance in space and non-uniform creates high contrast in space

Question 19

________ ________ Pattern: 1) point source (focused) 2) linear source (diffusion)

Answer 19

LIGHT DISTRIBUTION PATTERN

Question 20

initial lumen production 100% to 70%

Answer 20

LOSS LIGHT DEPRECIATION

Question 21

LUMINAIRE CLASSIFICATIONS:

6 types? name 5 ways they can be mounted

Answer 21

Direct, semi-direct, semi-indirect, direct-indirect, general diffuse, indirect

recessed, semi-recessed, surface mounted, suspended, wall mounted

Question 22

technique used to produce even wash of light on vertical surface from top to down

Answer 22

wall washing CINDERELLAAA

Question 23

technique used to produce a wash of light across a ceiling

Answer 23

cove lighting, aint that the truth

Question 24

technique that uses downcasters, or uplights produce glazing lights close to vertical surfaces

Answer 24

Grazing and Scallops

Question 25

What is spot lighting? its best application?

Answer 25

a focused, targeted, defined spot - stripper pole