Personal Microbial Cloud Experiment

Humans harbor diverse microbial communities in and on our bodies, and these can be readily detected in the built environment. Human-associated bacteria disperse into and throughout buildings by three primary mechanisms: (1) direct human contact with indoor surfaces; (2) bioaerosol particle emission from our breath, clothes, skin and hair; and (3) resuspension of indoor dust containing previously shed human skin cells, hair and other bacteria-laden particles. Microbial communities in the built environment are often traced back to an individual person, based on their direct contact with an object, including classroom surfaces and mobile phones. Using our unique Climate Chamber, we measured the airborne bacterial emissions, or “microbial cloud“, of individuals. Most occupants could be clearly detected by their cloud or by settled microbial particles within 1.5 – 4 hours. Our results confirm that an occupied space is microbially-distinct from an unoccupied one, and demonstrate for the first time that individuals release their own personalized microbial cloud.

What is up with Noises? (The Science and Mathematics of Sound, Frequency, and Pitch)

Accuracy not guaranteed. Get Audacity and play! http://audacity.sourceforge.net/

Correction: it is the “Basilar” membrane, which is what I say, but somehow between recording the script and actually drawing the stuff I got confused and thought I just pronounced my Vs poorly. Always sad to have such a simple and glaring error in something I put hundreds of hours of work into, but a “Vasilar” membrane can be the kind that a Vi draws to explain Viola Vibrations, I guess! Making up new words is just so prolightfully awstastic.

Props to my Bro for excellent and creative swing pushing, and to my Mamma for filming it.

Extra special thanks to my generous donators, without whom I would not have been able to create this video. Because of your support, I have the equipment, time, and take-out Thai food necessary for doing stuff like this.

My personal website, which you might like: http://vihart.com