Image: courtesy of MJ

Multiple scattering of light in a turbid medium increases effective absorption of light by extending the pathlengths of photons in the medium. This enhances a low absorption of red light by ice and makes deep crevasses in snow, which radiate mostly multiple-scattered light, appear bluish (for example, Bohren CF 1987). The snow in the photo also appears bluish in the shadows. Is multiple-scattering of light in the snow an appropriate explanation of this blue color? (Hint: The photo was taken on a cloudless day!) Comments   See also other images in the TPDSci gallery and consider showing here interesting images of particles and dispersions.

Topics in Particle and Dispersion Science (TPDSci) is an online publication (ISBN 0-9780628-0-9) intended to provide a concise review of interdisciplinary topics in the particle and particle dispersion science, with the emphasis on the most recent developments. It is extensively cross-referenced and can be accessed via several convenient threads:

• ♦ Literature survey - a survey of the recent publications on particles and dispersions (the left panel) in representative journals. These publications are referred to by the index and are intended to be discussed by the topical notes. The format of the survey changed in 2008 to be research field-oriented. Publications are reported within a field's survey as they come to the attention of the editor.
• ♦ Topics - a table of contents of the collection of topical notes and problems for classroom use.
• ♦ Index - an alphabetically-ordered hierarchical list of keywords linked to specific topical notes and references
• ♦ References - a list of relevant publications in over 150 journals. Many of these journals are monitored for the literature survey. Many of the over 1500 citations are linked to Internet-based document sources (some freely available), and contain periodically-tested links to the authors' webpages and internet-based contact sites. This thread combines (as of May 2007) the References thread with the discontinued Authors thread to simplify viewing and maintenance.
• ♦ Author/expert contact info - the References section contains, where possible, web-based contact info for authors of publications cited or indexed in TPDSci, experts in their respective fields.
• ♦ Dictionary - definitions, abbreviations, and acronyms used in this publication.

TPDSci accepts brief original contributions and contributions that review and comment on publications within the scope of TPDSci.

This publication is available freely for a limited time.

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Modified: 19-Apr-2008