et

luumen

1

Terminological databases

Valgustehnika terminibaas

ID 644094 Last modified 25.11.2025
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Domain electric lighting
  • SI süsteemi valgusvoo ühik
    Good to know
    • 1 luumen on võrdne monokromaatilise kiirguse valgusvooga, mille sagedus on 540 × 1012 Hz ja mille kiirgusvoog on 1/683 W.
    • Tähis: lm
  • 1 lm is equal to the luminous flux of a beam of monochromatic radiation whose frequency is 540 × 1012 Hz and whose radiant flux is 1/683 W.
    Good to know
    • Symbol: lm
luumen
Usage examples
  • 6-vatise leedlambi valgusvoog on ca 450 luumenit.
lumen

Word forms

Inflection Type 2e

luumen luumenid
luumeni luumenite
luumenit luumeneid

Etymology

laensõna
  • luumen
    • Lumen 'luumen'
      • lumen 'luumen' ( André-Eugène Blondel 1894 )
        • lūmen 'valgus'

Related words not available

Phrases and phrasal verbs not available

Compounds with search word as second component not available

Compounds with search word as first component not available

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