missiman Posted January 1, 2019 Share 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 Link to comment Share on other sites More sharing options...
Solution Chat_du_Cheshire Posted January 1, 2019 Solution Share 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 Link to comment Share on other sites More sharing options...
missiman Posted January 1, 2019 Author Share Posted January 1, 2019 merci bcp!!!! Quote Link to comment Share on other sites More sharing options...
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