Question

what will be the shape of flame where gravity is absent​

Answer 1

Answer:

Without gravity, hot air expands but doesn't move upward. The flame persists because of the diffusion of oxygen, with random oxygen molecules drifting into the fire. Absent the upward flow of hot air, fires in microgravity are dome-shaped or spherical—and sluggish, thanks to meager oxygen flow.

Answer 2

Answer:

Without gravity, hot air expands but doesn't move upward. The flame persists because of the diffusion of oxygen, with random oxygen molecules drifting into the fire. Absent the upward flow of hot air, fires in microgravity are dome-shaped or spherical—and sluggish, thanks to meager oxygen flow.Normal flames produce soot, CO2, and water. Cool flames produce carbon monoxide and formaldehyde.” So there it is — a cool flame without soot! And therefore a candle flame on the space station produces no incandescence, resulting in a pale blue flame instead of a bright yellow-white flame.

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