Silver locus

The fire dust or sparks which are produced by iron or carbon create the colour which resembles that of the black body. The colour of the sparks of Senko-Hanabiwhich is caused not only by carbon but also other materials, also resembles the colour of the black body. We feel that the. colour of the aluminium fire dust is a little different from the black body. The colour changes from red-orange to yellow, white yellow and silver as the temperature increases, and the locus may be written as the line... 

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