Drying your hands by shaking them really could be the best way to keep them clean, an investigation by a citizen scientist has suggested.
To research whether hand dryers put bacteria back onto your hands, Dallin Lewis, 33, held petri dishes under the machines at a public restroom, gas station, movie theater and shop in Provo, , for several seconds.
After incubating them for three days the dishes were found to be crawling with bacteria and fungi — which appeared in white, yellow and black smudges. The public bathroom dryer appeared to be the most contaminated.
Load More
Yorumlar
Kalan Karakter: