en

lm

1 symbol

Terminological databases

EKI terminibaas Esterm

ID 728934 Last modified 03.05.2024
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Domain Physicsunits of measurementair traffic
  • valgusvoo ühik rahvusv. mõõtühikute süsteemis (SI). 1 lm võrdub valgusvooga, mida punktikujuline valgusallikas kiirgab ruuminurka 1 steradiaan, kui tema valgustugevus on 1 kandela.
  • unit of luminous flux, equal to the luminous flux per steradian emitted by a point source of one candela of uniform intensity
luumen
lm symbol
lumen
Usage examples
  • Manufacturers of luminaires for fluorescent lamps without integrated ballast with total lamp lumen above 2 000 lumen shall provide at least the following information on free-access websites and in other forms they deem appropriate for each of their luminaire models.
lm symbol
lumen

Metroloogia terminibaas

ID 573463 Last modified 02.10.2025
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Domain metrologyunits of measurement
lm
lm
  • valgusvoo erinimetusega SI tuletatud ühiku luumen tähis
  • symbol of SI derived unit with special name lumen for luminous flux
lm symbol
Good to know
  • 1 lm = 1 cd.sr
lm symbol
Good to know
  • 1 lm = 1 cd.sr

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