Abstract
The article observes how the dissemination of knowledge makes use of both word and text as well as image, thus exploiting a communication that is both verbal and visual. Think of the iconographic mass, made up of diagrams and pictures, which we can easily find in support of scientific texts in order to present the results obtained from the studies conducted on the most disparate research topics. Contents of a visual nature is therefore an integral part of the discourse and, in a symbiotic way, it should be considered a consubstantial element to the writing tout court.