In 1912, the latter, began to create his «compositions,» paintings constituted by grids of horizontal and vertical black lines in three primary colors. (artspace.com)
Zero time points and vertical black lines indicate saccade onset. (journals.plos.org)
Here he lays thin, unevenly spaced horizontal and vertical black lines over light blue acrylic, to him the color of open sky. (haberarts.com)