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.
Quora User. Vincent van Gogh; one of the world's most famous painters. He was the focus of a massive reform movement in art even though his style and choice of colours was perhaps due to changes in perception caused by both altered mental states and a vision problem, the latter only being recognised recently.