(April 14, 2021 at 2:49 pm)FlatAssembler Wrote: Well, I do not know much physics or chemistry, but I think those droplets on the mirror are droplets that were already in the air, not ones you just breathed out. A lighter also causes droplets to form on a mirror near-by, but it is obviously not breathing out water.Our breath is moist, because we breath out water from our lungs. This is a mix of water vapor and fine aerosol. When you breathe on a mirror, the moisture from your hot breath condenses on the colder mirror.
Talking is a great way to generate larger micro droplets -- the vocal chords literally spew out micro-droplets (as likely does the mouth).