After having lost his forearm in WWI, Strzeminski decided to develop his interests in art and started to paint first in Poland and later in Vilnius. Greatly influenced by Constructivism, he founded together with Berlewi the group Blok. Few years later he established a new movement called Unism, bringing together paintings and musical compositions by Zygmunt Krauze. His theoretical principles were collected in his book The Theory of vision. He also founder the group a.r. and became a teacher at the Higher School of Plastic Arts and Design, which led to the creation of The Neoplastic Room, eventually dismantled in 1950.