Q1.
Do you notice the fragrance from a distance?
Answer
Yes — though not at once. Wait a few minutes and the fragrance reaches you even at the far end of the room.
- Immediately after lighting: the fragrance is felt only around the incense stick itself.
- Shortly afterwards: you can smell it throughout the room.
This happens because the particles of the fragrance spread out and fill the entire room. They do not travel of their own accord: the particles of air are moving constantly, and they hit the fragrance particles and help them spread throughout the room.
Why it takes a few minutes and not an instant: a fragrance particle does not fly straight to your nose. It is knocked about again and again by air particles coming from every direction, so it works its way across the room by a long, crooked path.