This simple five-second candle maintenance step prevents soot marks and reduces fire risks: It takes next to no time to do ...

The plume visible after extinguishing a candle flame is a stream of unburned fuel particles rather than smoke. It is powered by the residual heat of the wick. This can be tested by collecting the ...

A candle is more illuminating after it has been blown out. In 2009, aspiring science photographer Grover Schrayer took a series of photos documenting candle smoke--something that most people have seen ...