HomeServicesBlogDictionariesContactSpanish Course
← Back to search

Meaning of apparent magnitude | Babel Free

Noun CEFR B2

Definitions

a numerical measure of the brightness of a star, planet etc.; a star with apparent magnitude 0 gives an illuminance of 2.54 microlux just outside the earth's atmosphere, or 82% of that (2.08 microlux) under clear skies, and every increase of 1 unit represents a decrease in the light received by a factor of 2.512.

countable, uncountable

Equivalents

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

See also

Learn this word in context

See apparent magnitude used in real conversations inside our free language course.

Start Free Course