Aerosol formation is the process by which tiny particles, called aerosols, are created and suspended in the air. These particles can range in size from a few nanometers to several micrometers and can be comprised of various substances such as dust, pollutants, or organic materials. Aerosol formation can occur through a variety of mechanisms, including condensation of vapor molecules, nucleation of gas molecules, or aggregation of smaller particles. These aerosols can have significant impacts on air quality, climate, and health, as they can affect visibility, weather patterns, and respiratory health. Researchers studying aerosol formation seek to understand the sources, properties, and behavior of these particles in order to better predict and mitigate their effects on the environment and human health. This research often involves laboratory experiments, field measurements, and computer modeling to investigate the complex processes involved in aerosol formation.