A layer of tiny grains can slow sound waves




Researchers say the findings could lead to a new way of controlling frequencies in electronic devices such as cellphones, but with components that are only a fraction the size of those currently used for that function. On a larger scale, it could lead to new types of blast-shielding material for use in combat or by public-safety personnel or equipment.

Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/1...

Martes, 6 de Agosto 2013
Jueves, 1 de Enero 1970
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