3 ms·
Since a filter sorts particles from air molecules, this would imply that the hardest particles to filter are just a couple atoms large.
by jbay808 6y ago
Since a filter sorts particles from air molecules, this would imply that the hardest particles to filter are just a couple atoms large.
- mokus 6y agoTo be fair, that’s probably true. It’s just that the particles at that scale are other molecules and they are indeed very hard to filter out mechanically.