Although paintings are created by an individual artist, they are at the same time the product of an entire society that coagulates in the quill of an artist. The author has subjected this selection process to a single criterion: importance in terms of artistic production, focusing attention, in particular, on painters who are considered pioneers or founders of schools or doctrines in the art of painting.

Engineer Farouk Sayed Hussein praised in his book Encyclopedia of Comprehensive Tests for Electronic Devices many important information that engineers and repair and installation technicians need, in addition to the fact that his book contains many pictures to illustrate the texts of the book.