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Soft matter and liquids

Soft matter and liquids

Physics at work

01 Feb 1999

Colloids are among the more unusual substances known to man, with materials in this broad class of soft condensed matter - which includes foams, emulsions and dispersions - often appearing to defy some of the most basic principles of physics. For example, like charges can attract rather than repel each other in colloids, and entropy can lead to order rather than disorder.

Colloids are also immensely important in a range of industries. Although the products themselves a

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