the basics

Question 1

illuminance is measured in…

Answer 1

lux (one lumen per square meter)

Question 2

light output is measured in….

Answer 2

lumens

Question 3

color temperature is measured in….

Answer 3

kelvin

Question 4

a measure of how warm or cool the light emitted by a source is

Answer 4

kelvin

Question 5

a measure of how “realistic” or “natural” an object appears under a light source

Answer 5

CRI

Question 6

the brightness of a bulb

Answer 6

luminosity

Question 7

the ratio of light output to the electrical power consumed (lumens/watt)

Answer 7

efficacy

Question 8

the miles/gallon of lighting.. higher the value the more efficient the light

Answer 8

efficacy

Question 9

the quantity of light output on a surface (aka- light intensity)

Answer 9

illuminance

Question 10

incandescent lamps range from what color temp?

Answer 10

2,700K-3,000K

Question 11

Fluorescent lamps generally cast what color?

Answer 11

bluish-white

Question 12

mid day sunlight is around what color temperature range

Answer 12

5,000K-6,000K

Question 13

CRI is a scale from what to what

Answer 13

0-100

Question 14

lux is one ___ per sq ____

Answer 14

one lumen per sq meter

Question 15

A CRI rating over what number is considered excellent?

Answer 15

over 90

Question 16

floors should be generally at what # of lumens/sqft?

Answer 16

20

Question 17

tables & raised surfaces should be generally at what # of lumens/sqft?

Answer 17

30

Question 18

desk & task lighting should be generally at what # of lumens/sqft?

Answer 18

50