| D | equivalent spherical particle diameter | ρF | fluid density |
| M | dry mass of the particle | ρP | particle density |
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.