"Solar Machine" is a novel by the Ukrainian writer Volodymyr Vinnichenko, published in 1920. The book is a socio-philosophical work that examines the problems and contradictions of society at that time. In this novel, the author describes the period of political turbulence and social changes that followed the revolution of 1917 in the Russian Empire. The main character, a young engineer Oleksandr Goncharenko, is trying to find a new way for society, based on the ideals of justice, freedom and development. In his thoughts and actions, Goncharenko tries to create a "solar machine" - a system that would regulate relationships between people and lead to harmony in society. The author offers new ideas and views on social organization, religion, politics and the role of the individual in society. "Solar Machine" is an important work of Ukrainian literature that highlights the spiritual and political situation of the late 1910s. The novel asks questions about the ways of society's development, the role of the individual and the problems of finding justice in difficult times.