en

candela

1 substantive

Terminological databases

Metroloogia terminibaas

ID 1121616 Last modified 19.08.2024
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Domain metrologyunits of measurement
kandela preferred
candela preferred
  • valgustugevuse SI-põhiühiku nimetus
  • unit of luminous intensity in the International System of Units (SI)
kandela preferred
Usage examples
  • Valgustugevust ligikaudu 1 kandela levitab enda ümber tavaline majapidamisküünal.
candela preferred

Metroloogia terminibaas

ID 573437 Last modified 19.08.2024
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Domain metrologyunits of measurement
  • kandela on määratud monokromaatilise 540 × 1012 hertsise kiirgussagedusega kiirgusallika valgusviljakuse Kcd fikseerimisega väärtusarvul 683 väljendatud ühiku lm W–1 abil, mis on võrdne cd sr W–1 või cd sr kg–1 m–2 s3, kus kilogramm on määratletud h, meeter c ja sekund ∆νCs alusel
    Good to know
    • Kandela (tähis cd) on SI valgustustugevuse ühik teatavas kindlas sihis ja on SI põhiühik.
  • the candela is defined by taking the fixed numerical value of the luminous efficacy Kcd of monochromatic radiation of frequency 540 × 1012 Hz to be 683 when expressed in the unit lm W–1, which is equal to cd sr W–1, or cd cr kg–1 m–2 s3, where the kilogram, metre and second are defined in terms of h, c and ∆νCs
    Good to know
    • The candela, symbol cd, is the SI unit of luminous intensity in a given direction and is the base unit of the SI.
kandela
Good to know
  • Kandela on defineeritud SI Brošüüris, mis on publitseeritud BIPM-i poolt.
candela
Good to know
  • The candela is defined by the SI Brochure, which is published by the BIPM.

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