miercuri, decembrie 22, 2010

What is dust?

Let's set aside the bunny for a second, and focus on the filth. Dust is everywhere. Fine sand is rock dust. Rubber, brakepad and pavement particles are road dust. Fine ash can be volcanic dust. Hell, Carl Sagan famously and repeatedly referred to Earth as a "mote of dust," albeit in a cosmic sense. But the dust we're talking about, dust bunny dust, is a specific thing, with a specific recipe. And a studied one! According to David W. Layton and Paloma I. Beamer, who coauthored a report called ‘Migration of Contaminated Soil and Airborne Particulates to Indoor Dust,' typical household dust in a midwestern home is comprised of the following:

Indoor dust is a mixture of soil tracked into a residence, particulate matter derived from ambient outdoor air, and importantly, organic matter inputs from various sources. A prominent feature of indoor dust is its organic material content, with levels of about 40 wt % in residential housing.

Tot articolul: http://gizmodo.com/5715598/giz-explains-where-dust-bunnies-come-from

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