Qualitative Real-Time Schlieren and Shadowgraph Imaging of Human Exhaled Airflows: An Aid to Aerosol Infection Control
Figure 1
Schematic of schlieren optical imaging system set-up.
Test subjects (human volunteers) typically stand about 1 meter in front and to one side (indicated by ‘test area’), and face across the mirror to maximize the reflective mirror surface within which their exhaled airflows can be visualized.