>>14232797Colour corresponds to temperature only with perfect blackbodies. The upper part of a candle flame contains impurities like soot and wax, and it actually does correspond to a blackbody, and you can say that the whiter parts are hotter while the redder parts are colder. The lower part, however, does not have these impurities, and its colour comes from the hot hydrocarbons radiating according to their emission spectrums, which do not look at all like the emission spectrum of a blacbody. So the lower parts of the flame are indeed colder, but they also happen to be blue.
>>14233047It'd be spherical, colder and entirely blue.
