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Meaning of Illuminance | Babel Free

Noun CEFR C1

Definitions

The luminous flux incident on unit area of a surface; commonly measured in lux (lumen/metre²) or otherwise foot-candles. The illuminance of a star upon the earth is frequently measured on a negative logarithmic scale referred to as its apparent magnitude, which see.

countable, uncountable

Equivalents

العربية الإضاءة
Suomi valaistusvoimakkuus
日本語 照度

CEFR level

C1
Advanced
This word is part of the CEFR C1 vocabulary — advanced level.
See all C1 English words →

See also

illuminant illuminary Illuminate Illuminated Illuminates Illuminating

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