Definitions about textures

Texture: it is the visual and tactile quality of the surfaces due to the material.

Tactile textures: are those thar can be percired through the sense of touch.

Visual textures: those which can only be percibed through the sense of sight.

Natural textures: thouse that can be found in the nature.

Artificial texture: are those created by the human being manually or mecanically.

Rubning thecnique: it consists on frictioning or rubbing a crayon or colored pencil on a thin paper wich is over a surface witj a tactile texture so the texture gets copied on de paper.

Scratchboarding: it is usually done with waxed colors and it consists on giving two coats of color to the media(paper, wood...)beging the second one darker, so when scra5ching over the first layer the second one shows up