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The company was established as "Fabrique Genevoise de Crayons Ecridor" in Geneva in 1915. [2] When Arnold Schweitzer took over the company in 1924, he renamed it after Caran d'Ache, the pseudonym of the Russian-French satiric political cartoonist Emmanuel Poiré – who in turn took his pseudonym from карандаш (karandash), the Russian word for 'pencil', itself of Turkic origin.
Born in Moscow on 6 November 1858, d'Ache was the grandson of an Officer-Grenadier in Napoleon's Grande Armée who, wounded during the Battle of Borodino, had stayed behind in Russia. [5] After his grandfather's death, he was adopted by a Polish family whose daughter he later married. His younger sister, Maria Poiret, became a famous dancer and ...
Carole Hübscher Clements (born 16 April 1967) is a Swiss entrepreneur. She has been CEO of Geneva-based colored pencil and stationery manufacturer Caran d'Ache [1] since 2012 and is the fourth generation to head the company.
Chromaticity is an objective specification of the quality of a color regardless of its luminance. Chromaticity consists of two independent parameters , often specified as hue ( h ) and colorfulness ( s ), where the latter is alternatively called saturation , chroma , intensity , [ 1 ] or excitation purity .
Typical photographic scene lit by full moon [7] 10 −2: 5 mcd/m 2: Approximate scotopic/mesopic threshold [8] 10 −1: 10 0: cd/m 2: 2 cd/m 2: Floodlit buildings, monuments, and fountains [9] 10 1: 5 cd/m 2: Approximate mesopic/photopic threshold [8] 25 cd/m 2: Typical photographic scene at sunrise or sunset [7] 30 cd/m 2: Green ...
Luminance: L v: candela per square metre: cd/m 2 (= lm/(sr⋅m 2)) L −2 ⋅J: Luminous flux per unit solid angle per unit projected source area. The candela per square metre is sometimes called the nit. Illuminance: E v: lux (= lumen per square metre) lx (= lm/m 2) L −2 ⋅J: Luminous flux incident on a surface Luminous exitance, luminous ...