missiman Posted January 1, 2019 Posted January 1, 2019 Salut qql sait comment faire la 16C elle est vrai " une bougie d'intensité de 1 candela émet au total 4pi lumen" Quote
Solution Chat_du_Cheshire Posted January 1, 2019 Solution Posted January 1, 2019 Candela = Lumen / Steradian D'où 1 Cd = x Lumen / 4pi sr (car en fait ici la bougie émet dans toutes les directions, son angle solide est total soit 4pi), il y a donc : Donc x = 1*4pi = 4 lumens Quote
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