appearance. n. 1. the act or an instance of appearing, as to the eye, before the public, etc. 2. the outward or visible aspect of a person or thing: her appearance was stunning; it has the appearance of powdered graphite. 3. an outward show; pretence: he gave an appearance of working hard.
Impasto. Perhaps best known for his thick use of paint, Vincent Van Gogh was a famous adherent to the popular painting technique known as impasto, which involves the thick laying down of paint on a particular segment of the canvas.
Van Gogh's drawings are special due to the fact that his depiction of figures, light, and landscape can be admired without the need for color. The artist drew using pencil, black chalk, red chalk, blue chalk, reed pen and charcoal, although he often mixed mediums when drawing.