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Granular!

Maria Helena Guedes

出版	Clube de Autores, 2016-03-03
主題	Juvenile Nonfiction / General
ISBN	EAN:3410002050724
URL	http://books.google.com.hk/books?id=1c6CEAAAQBAJ&hl=&source=gbs_api
EBook	SAMPLE

註釋

Some examples of granular materials are snow, nuts, coal, sand, rice, coffee, corn flakes, fertilizer and ball bearings. Powders are a special class of granular material due to their small particle size, which makes them more cohesive and more easily suspended in a gas. Granular materials are commercially important in applications as diverse as pharmaceutical industry, agriculture, and energy production. Research into granular materials is thus directly applicable and goes back at least to Charles-Augustin de Coulomb, whose law of friction was originally stated for granular materials.