MINNEAPOLIS — A collage of six photos has been circling the internet, detailing what's left on your hands after washing them for different lengths of time. The pictures show a hand under UV light ...
Researchers describe a simple model that captures the key mechanics of hand-washing, estimating the time scales on which particles, like viruses and bacteria, were removed. Particles are trapped on ...
Don Schaffner wants you to understand that your hands are never going to be clean. He should know — over the past 20 years, he has published multiple research papers investigating the minutia of ...
Hand washing with soap and water at a sink. Image by Lars Klintwall Malmqvist, via Wikimedia (Public Domain) Hand washing with soap and water at a sink. Image by Lars Klintwall Malmqvist, via ...
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