Panel painting uses heated wax as the medium for the pigments. This was replaced before the end of first millennium by tempera, which uses an egg-yolk medium. Using small brushes dipped in a mixture of pigment and egg-yolk, the paint was applied in very small, almost transparent, brushstrokes. Thin layers of paint would be used to create volumetric forms. By the beginning of the 15th century, oil painting was developed. This was more tolerant, and allowed the exceptional detail of Early Netherlandish art. This used a very painstaking multi-layered technique, where the painting, or a particular part of it, had to be
The medium is the message way of getting people to notice a lot of things. And so the title is intended to draw attention to the fact that a medium is not something neutral—it does something to people. It takes hold of them. It rubs them off, it massages them and bumps them around, chiropractically, as it were, and the general roughing up that any new society gets from a medium, especially a new medium, is what is intended in that title." For McLuhan, it was the medium itself that shaped and controlled "the scale and form of human association and action". Taking the movie