candela

Also known as cd

Candela (symbol: cd) is the SI unit of luminous intensity. It measures the luminous power per unit solid angle emitted in a particular direction. A common wax candle has a luminous intensity of roughly 1 cd.

AI overview

A candela (cd) is the standard scientific unit that measures how bright light appears in a particular direction. It matters because it gives us a precise, universal way to compare the brightness of different light sources—for example, a typical candle produces about 1 candela of light.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Unit.caption: Photopic (black) and scotopic (green) luminous efficiency functions. The photopic includes the CIE 1931 standard (solid), the Judd–Vos 1978 modified data (dashed), and the Sharpe, Stockman, Jagla & Jägle 2005 data (dotted). The horizontal axis is wavelength in nm.
Unit.standard: SI
Unit.quantity: luminous intensity
Unit.symbol: cd
Unit.units1: international candles
Unit.inunits1: ≈ cp
Unit.units2: Hefnerkerze
Unit.inunits2: ≈ HK
Unit.name: candela
Unit.image: 290px

via Wikipedia infobox

Wikidata facts

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Unicode character: ㏅
conversion to SI unit: 1
unit symbol: cd
Wikidata SPARQL query equivalent: wd:Q83216 p:P2370/psn:P2370 [wikibase:quantityAmount ?source; wikibase:quantityUnit ?base]. ?item p:P2370/psn:P2370 [wikibase:quantityAmount ?target; wikibase:quantityUnit ?base]. BIND(?source / ?target as ?value)
Commons category: Candela (luminous intensity unit)

Sources (2)

via Wikidata · CC0

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