Composition with Red Blue and Yellow De Stijl. An encounter with fellow Dutch artist Bart van der Leck provided ground for Mondrian to exchange ideas. From van der Leck he received the concept of painting flat areas of pure color; a solution to Mondrian’s problem of coloring - he was then using color in what he considered an Impressionist way, which was too restless and emotional. In return, van der Leck adopted Mondrian’s concept of crossed vertical and horizontal lines as a basis for composition. These two technical elements are consistent throughout all of Mondrian’s work. Shortly after the formation of Mondrian and van der Leck’s
Van der Waals (crater) with only a few tiny craterlets to mark the surface. Nearby craters of note include Clark to the north, Carver to the east, and Pikel'ner to the southeast. About two crater diameters to the west-southwest is Lebedev. By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Van der Waals. Van der Waals (crater) Van der Waals is a lunar impact crater on the far side of the Moon. It is a heavily eroded feature with an irregular outer rim. The edge is lowest along the