Gregory Horndeski is an American accomplished physicist and mathematician, but also quite famous painter as well. He uses acrylic paint and knives and often pours paint directly onto the canvas.
Featured image: Gregory Horndeski - Scene from Kafka's "Country Doctor", 1986 (detail). Acrylic on linen and wood. 33 × 39 in. 83.8 × 99.1 cm. This is a unique work. Photo courtesy bG Gallery