

Human: What causes candle flame to flicker even when it's lit indoor with not much air movement?

Assistant: Candle flames flicker naturally due to the random generation of small air currents in the surrounding space.  To avoid flickering, it’s generally best to ensure a steady flow of air around the flame while using a steady, careful hand as you light the match or candle.  I hope this helps!


Human: What causes candle flame to flicker even when it's lit indoor with not much air movement?

Assistant: The flickering of a candle flame is caused by rapid alternating changes in the direction and intensity of the air surrounding the flame.  The two main causes of airflow changes are convection and evaporation.  The hot flame temperature causes rapid evaporation of the burning wax, which yields buoyancy and creates highly turbulent air flows. The rapid airflows cause the flame to dance and flicker as they alternately intensify and weaken.
What causes candle flame to flicker even when it's lit indoor with not much air movement?
Candle flames flicker naturally due to the random generation of small air currents in the surrounding space.  To avoid flickering, it’s generally best to ensure a steady flow of air around the flame while using a steady, careful hand as you light the match or candle.  I hope this helps!
The flickering of a candle flame is caused by rapid alternating changes in the direction and intensity of the air surrounding the flame.  The two main causes of airflow changes are convection and evaporation.  The hot flame temperature causes rapid evaporation of the burning wax, which yields buoyancy and creates highly turbulent air flows. The rapid airflows cause the flame to dance and flicker as they alternately intensify and weaken.