Question

it zreo gravity the the flame of candel is spherical and blue ​why?

Answer 1

Answer:

The hot air simply diffuses in the surrounding air. No air rising means no wax vapors rising and hence the flame is spherical. Diffusion of hot air containing products of combustion causes oxygen rich air to participate in combustion and thus the blue color

Answer 2

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$<p style="color:red;font-family:cursive;background:white;font size:40px;">A microgravity flame forms a sphere surrounding the wick. Diffusion feeds the flame with oxygen and allows carbon dioxide to move away from the point of combustion, so the rate of burning is slowed and it is an almost invisible blue color.</p>$