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.
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News tagged with dust
The Energy Sources of Ultraluminous Galaxies
Nov 27, 2009 |
4.6 / 5 (16) |
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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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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.
Herschel takes a peek at the ingredients of the galaxies
23 hours ago |
4.7 / 5 (7) |
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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 ...
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.
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