Making Matter

Credits for Help received

Index © M. Hewat 1998 Help

  • The scientific content is due to Dr A.W. Hewat, who welcomes suggestions for improvement. It is meant for a popular audience, but is hopefully of interest to physicists and chemists working with materials, and of course students.

  • The 3D structure drawings were produced in VRML by Marcus Hewat's xtal-3d application. They were checked on a 120 MHz Pentium-II machine running Netscape 4.5 with the SGI Cosmo 2.1 Windows VRML plug-in.

  • The 2D drawings are simple screen captures of the 3D drawings displayed on a Silicon Graphics Elan machine using the SGI VRML-Inventor viewer ivview. The small drawings were automatically reduced from the large versions by Benjamin Franz's htmlthumbnail perl Unix script, after modifying it according to his suggestions to produce GIF rather than JPEG (larger files but sharper edges in drawings).

  • Some information on gemstones was obtained from various WWW sources, and especially John Miller's Gemnology pages, to whom we are particularly indepted for the delightful word chatoyance.

  • Other sources on the WWW are referenced as appropriate in the text.

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    Please report any problems to hewat@ill.fr.