Dust
hideDust is a general name for minute solid particles with diameters less than 20 thou (500 micrometers). Particles in the atmosphere arise from various sources such as soil dust lifted up by wind, volcanic eruptions, and pollution. Dust in homes, offices, and other human environments consist primarily of human skin cells, but also contain small amounts of plant pollen, human and animal hairs, textile fibers, paper fibers, minerals from outdoor soil, and many other materials which may be found in the local environment.
For more information about Dust, read the full article at
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News tagged with dust
The Energy Sources of Ultraluminous Galaxies
Nov 27, 2009 |
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(PhysOrg.com) -- Ultraluminous infrared galaxies ((ULIRGs) are galaxies whose luminosity exceeds that of a trillion suns; for comparison, the Milky Way galaxy has a typical (and much more modest) luminosity ...
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Cosmic 'Dig' Reveals Vestiges of the Milky Way's Building Blocks
Nov 25, 2009 |
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(PhysOrg.com) -- Peering through the thick dust clouds of our galaxy's "bulge" (the myriads of stars surrounding its center), a team of astronomers has unveiled an unusual mix of stars in the stellar grouping ...
New radar helps monitor site of century-old tragedy
Space & Earth / Earth Sciences
Nov 27, 2009 |
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(PhysOrg.com) -- A University of Alberta researcher has turned the site of a southern Alberta rockslide tragedy into the proving ground for new equipment meant to avert such a disaster in the future.
Image: Prometheus Plays Tug of War with One of Saturn's Rings
Space & Earth / Space Exploration
Nov 25, 2009 |
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(PhysOrg.com) -- The diminutive moon Prometheus whips gossamer ice particles out of Saturn's F ring in this image taken by the Cassini spacecraft on Aug. 21, 2009.
Herschel takes a peek at the ingredients of the galaxies
Nov 27, 2009 |
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(PhysOrg.com) -- The European Space Agency has today released spectacular new observations from the Herschel Space Observatory, including the UK-led SPIRE instrument. Spectrometers on board all three Hershel ...
Eye floaters and flashes of light linked to retinal tear, detachment
Nov 24, 2009 |
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Suddenly seeing floaters or flashes of light may indicate a serious eye problem that - if untreated - could lead to blindness, a new study shows.
Message gone viral? Blame it on altruistic, yet image-conscious Internet 'e-mavens'
Nov 26, 2009 |
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(PhysOrg.com) -- Why do some online ad campaigns go viral while other online marketing messages gather "cyber-dust" on the information superhighway? The key may lie in the motivation of Internet users to email ...
Exposure to both traffic, indoor pollutants puts some kids at higher risk for asthma later
Nov 24, 2009 |
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New research presents strong evidence that the "synergistic" effect of early-life exposure to both outdoor traffic-related pollution and indoor endotoxin causes more harm to developing lungs than one or the other exposure ...
Space shuttle Atlantis, 7 astronauts back on Earth
Space & Earth / Space Exploration
Nov 27, 2009 |
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(AP) -- Space shuttle Atlantis and its seven astronauts returned to Earth with a smooth touchdown Friday to end an 11-day flight that resupplied the International Space Station.
Ubisoft steps up videogame fitness with virtual coach
Nov 22, 2009 |
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French videogame powerhouse Ubisoft will have a virtual fitness coach whipping Wii users into shape starting Tuesday.
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