[Mark]’s sand table wisely has a glass top. Most of us have probably seen a video of a sand drawing table at work, in which a steel ball — magnetically-coupled to a gantry under a layer of sand — ...

[Mark]’s sand table wisely has a glass top. Most of us have probably seen a video of a sand drawing table at work, in which a steel ball — magnetically-coupled to a gantry under a layer of sand — ...

Islamic geometric patterns and architecture represent a profound synthesis of mathematical precision and artistic expression inherent in centuries of cultural heritage. These patterns are not merely ...