Nasal/mouth-breathing, whistling, laughing, coughing. This annotated series of shadowgraph video clips (displayed in real-time) shows a series of these everyday respiratory activities. The coughing footage (natural and with surgical and N95 masks) is shown again here, but in real-time. Images captured using the Photron SA1.1, at 500 fps, at 1024×1024 pixel resolution, formatted for playback in real-time, with a 32-year old male subject).
Tang J, Nicolle A, Pantelic J, Jiang M, Sekhr C, Cheong D, Tham K
CC BY 2.5
Video S3 from <cite style="font-style:normal">Tang J, Nicolle A, Pantelic J, Jiang M, Sekhr C, Cheong D, Tham K (2011). "<a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3120871">Qualitative Real-Time Schlieren and Shadowgraph Imaging of Human Exhaled Airflows: An Aid to Aerosol Infection Control</a>". <i>PLOS ONE</i>. <a href="https://en.wikipedia.org/wiki/Digital_object_identifier" class="extiw" title="w:Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1371/journal.pone.0021392">10.1371/journal.pone.0021392</a>. <a href="https://en.wikipedia.org/wiki/PMID" class="extiw" title="w:PMID">PMID</a> <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pubmed/21731730">21731730</a>. <a href="https://en.wikipedia.org/wiki/PubMed_Central" class="extiw" title="w:PubMed Central">PMC</a>: <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3120871">3120871</a>.</cite>