Both the thematic domain covered, that is science and technology, and the chronological field, the Middle Ages, are taken in a very broad sense. It is for this reason that I have included sites which deal with ancient authors whose medieval success is recognised. For the same reason, the engineers of the Italian Renaissance figure in the lists offered. I could give more examples: in general, I will cover in these pages everything we seems to me necessary to illuminate the various components of this theme, even in a very indirect fashion.
[This section is being revised]