FIG. 3.
Distribution of 1 µm aerosol particles in the classroom at different points in time for the (a) student 5 source and (b) student 8 source.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.