abstract:Rain dust or snow dust, traditionally known as muddy, red, coloured or blood rain, is a rain or any other form of precipitation which contains enough desert dust for the dust to be visible without using a microscope. Rain dust is common in the Western Mediterranean.
Radioactive isotopes accumulate in milk after they spread through the atmosphere, fall to earth in rain or dust, and settle on vegetation, where they are ingested by grazing cattle.
The Pocket PC-based PPT 2700 series, for instance, can withstand multiple drops from a height of four feet to a concrete floor, and it is sealed against rain and dust.