A fine new3 part documentary has just begun on BBC4 about the history of science in Islamic countries between the 8th & 14th centuries.
It’s not exactly Zelij related, but without a good understanding of mathematics and geometry, the art of Zelij would be well nigh impossible, and these documentaries explore how such knowledge was acquired and discovered at this early period.
It can be watched online at this url, at least for the next month or so, but probably only if you are based in the UK:
http://www.bbc.co.uk/programmes/b00gksx4
Lunar eclipse
A nice example of Islamic astronomy showing different phases of the moon by a scholar called al-Bīrūnī who lived in the 10th century in what is now Afghanistan.
