The physical method used to measure aerosol particle size distribution that uses multiple steps in determining sizes of aerosol particles is referred to as

Question

Quizplus · Accepted Answer

A cascade impactor measures what is termed the aerodynamic diameter of aerosols because the measurement is based on the aerodynamic behavior (sedimentation velocity and impaction characteristics)of the particles in the cascade impactor.Measuring particle size with the laser scattering method,the instrument determines the relationship between the intensity and the angle of light scattered from a particle and then calculates the particle size based on the Mie-scattering theory.

The Physical Method Used to Measure Aerosol Particle Size Distribution