Talk:Particle size
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Grain size is the size of grains on a rock dont be fooled by some other descriptios... this is a rock property used in the observation of rocks.
The Pleasures of Soil Watching (page 2 col 2 bottom) delightfully makes grain size tangible by telling what they feel like. "The first three terms -- sand, silt, clay -- stand, respectively, for (1) coarse mineral grains (sand particles are 2 to 0.05 millimeters...) which feel gritty when rubbed between the fingers; (2) medium fine particles (silt grains are 0.05 to 0.002 mm...), which feel like flour; and (3) very fine particles (clay particles are less than 0.002 mm...), which feel sticky when wet."
What other properties of grain size are accessible and interesting to people? Ideas? -- What drains well (gardening)? What fluidizes in an earthquake? What can you make sandcastles with? Potery? What water velocities are required for transport? Surface area of a kg?
Oh, the contraversial PARTICLE MATTER!
First off, this article shouldn't be in the geology section. Particle size is widely used in the polymer industry (probably just as much, if not more than it is used in geology). This fact isn't even mentioned in the article. It needs to be completely revamped to discuss particle size as it relates to polymers, silicones, microemulsions, and other types of emulsions.
