ABSTRACT
Particulate matter, such as aerosols, are a nonequilibrium state that with time evolves, via aggregation, to form larger particles. Aggregation with coalescence, like one might observe in a cloud of water droplets, leads to bigger, dense particles. Aggregation without coalescence, like one might observe in a cloud of solid, carbonaceous soot particles, leads to bigger, rami™ed (as opposed to
14.1 Introduction ........................................................................................................................ 341 14.2 Fractal Aggregates .............................................................................................................. 342 14.3 Light Scattering ..................................................................................................................344
