Airborne particles refer to tiny solid or liquid particles that are suspended in the air. These particles can come from a variety of sources such as dust, smoke, pollen, and pollutants from combustion engines. Research in this area focuses on studying the composition, size, concentration, and behavior of airborne particles, as well as their effects on human health and the environment. This research is important for understanding air quality, respiratory diseases, climate change, and developing strategies for pollution control and mitigation. Techniques used in studying airborne particles include air quality monitoring, atmospheric modeling, and particle characterization methods such as microscopy and spectroscopy.