standard illuminant

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Saint Lucia Day. Young girl wears Lucia crown (tinsel halo) with candles. Holds Saint Lucia Day currant laced saffron buns (lussekatter or Lucia's cats). Observed December 13 honor virgin martyr Santa Lucia (St. Lucy). Luciadagen, Christmas, Sweden

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Orange basketball on black background and with low key lighting. Homepage 2010, arts and entertainment, history and society

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Srinivasa Ramanujan, Indian mathematician and autodidact.

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Entrants falling and tumbling over while chasing the cheese at the 2016 'Cheese Rolling' held at Cooper's Hill, in the Cotswolds, Brockworth England

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Town of Sisimiut located on the coast of the Davis Strait on Kangerluarsunnguaq Bay, Greenland

The Largest Islands in the World

standard illuminant

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use in colour specification

In colour: Tristimulus measurement and chromaticity diagrams
… on the curve are CIE standard illuminants that approximate, respectively, a 100-watt incandescent filament lamp at a colour temperature of about 2,850 K, noon sunlight (about 4,800 K), and average daylight (about 6,500 K).
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