Collection: Incense Backflow Cones
Incense Backflow Cones are incense cones that the incense smoke (or plume) flows in the opposite direction as “normal” incense, that is, downwards instead of upwards.
incense Backflow Cones are made in the shape of a cone, with a small, hollow tunnel through the center, ending in a hole at the bottom center.
Have to use a special backflow incense burner designed specifically for backflow incense cones. Check out our collection of backflow incense burners.
How do backflow Incense Cones works: incense smoke is actually more dense than normal air at room temperature because it contains tiny particles. But when a normal incense is lit, smoke flows upwards because the effect of the heat offsets the weight of the tiny particles, as hot air is lighter than room-temperature air. However, in the case of a backflow incense, as it burns, smoke enters the hollow center tunnel, where it cools as it follows the along the path. When smoke cools, it becomes denser, so when it exits the incense at the bottom, it flows gently downwards.
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