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No. 41: Sep-Oct 1985

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Restless Gold

Thanks to the development of high-resolution electron microscopes and video recorders, we can now watch the bizarre behavior of tiny solid particles, which, it turns out, are not so solid after all. Ultrafine particles of gold about 18 Angstrom units across, containing only about 500 atoms, are not statis aggregations. The shapes of the particles are always changing. The gold atoms move cooperatively to shift kaleidoscope-like into various crystal structures. They have, in fact, been dubbed 'quasi-solids.' A large gold particle may even ingest smaller gold particles. The phenomena have no explanations as yet.

(Anonymous; "Japanese Gold in Atomic Motion," Nature, 315:628, 1985.)

From Science Frontiers #41, SEP-OCT 1985. © 1985-2000 William R. Corliss

Science Frontiers Sourcebook Project Reviewed in:

Quotes

  • "Before opening the book, I set certain standards that a volume which treads into dangerous grounds grounds like this must meet. The author scrupulously met, or even exceeded those standards. Each phenomenon is exhaustively documented, with references to scientific journals [..] and extensive quotations" -- "Book Review: The moon and planets: a catalog of astronomical anomalies", The Sourcebook Project, 1985., Corliss, W. R., Journal of the Royal Astronomical Society of Canada>, Vol. 81, no. 1 (1987), p. 24., 02/1987