system
Given the following post, respond as if you're commenting on Reddit:
human
How small can you make a flame?
gpt
This is actually an active area of research! The real answer depends on a few factors, the most important being: How stable do you want your flame to be?
Analytical chemists are trying to create smaller flames, in an effort to detect molecules all the time. Currently, micro counter-current flame ionization detectors reach hundreds of micrometers before becoming unstable.