et

luumen

1 substantive

Terminological databases

Metroloogia terminibaas

ID 572160 Last modified 16.09.2026
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Domain metrologyunits of measurement
luumen
lm
lumen
lm
  • valgusvoo erinimetusega SI tuletatud ühiku nimetus/tähis
  • name/symbol of the SI derived unit with special name for luminous flux
luumen
Usage examples
  • Luumen, tähisega lm, on SI-süsteemi valgusvoo mõõtühik, mis väljendab valgusallika kiiratava nähtava valguse tajutavat võimsust.
lm symbol
Usage examples
  • 1 lm = 1 cd·sr.
lumen
Usage examples
  • The lumen, symbol lm, is the SI unit of luminous flux, which quantifies the perceived power of visible light emitted by a source.
lm symbol
Usage examples
  • 1 lm = 1 cd·sr.

Word forms

Inflection Type 2e

luumen luumenid
luumeni luumenite
luumenit luumeneid

Etymology

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

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