Definition of Illuminance

1. Noun. The luminous flux incident on a unit area.

Exact synonyms: Illumination
Generic synonyms: Brightness, Brightness Level, Light, Luminance, Luminosity, Luminousness
Derivative terms: Illuminate

Definition of Illuminance

1. Noun. (physics) The luminous flux incident on unit area of a surface; measured in lux or lumens ¹

¹ Source: wiktionary.com

Definition of Illuminance

1. [n -S]

Medical Definition of Illuminance

1. The density of luminous flux incident on a uniformly illuminated area, measured in foot-candles (lumens per square foot) or lux (lumens per square metre). (05 Aug 1998)

Lexicographical Neighbors of Illuminance

illth
illths
illtreat
illtreated
illtreating
illtreats
illude
illuded
illudes
illuding
illui
illume
illumed
illumes
illuminable
illuminance (current term)
illuminances
illuminant
illuminants
illuminary
illuminate
illuminated
illuminates
illuminatest
illuminateth
illuminati
illuminating
illuminatingly
illumination
illumination unit

Literary usage of Illuminance

Below you will find example usage of this term as found in modern and/or classical literature:

1. Light's Labour's Lost: Policies for Energy-Efficient Lighting by Paul Waide, Satoshi Tanishima, International Energy Agency (2006)
"Overall it seems that the most popular illuminance setting for people working with computer screens was 200 lux. If people were in the habit of reading ..."

2. HVAC and Chemical Resistance Handbook for the Engineer and Architect: A ...by Tom Arimes by Tom Arimes (1994)
"Selection of Level of illuminance The following procedure is the currently accepted method of the Illuminating Engineering Society of North America for ..."

3. Protection of Chemical and Water Infrastructure: Federal Requirements ...by William O. Jenkins, Jr. by William O. Jenkins, Jr. (2005)
"illuminance describes the amount of light falling on a surface. If the surface is horizontal, light striking it Is known as horizontal illuminance; ..."

4. The Well-Being of Video Display Terminal Users: An Exploratory Study by Mark S Gottlieb, Steven L Sauter, Vernon M Dodson, Kathryn M Rohrer (1999)
"... LUM) Screen illuminance (SCRN ILL) Work surface illuminance (WRK SURF ILL) Keyboard illuminance (KYBD ILL) Screen to background luminance ratio (SB ..."

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