Pyotr Klimentievich Engelmeyer (Russian: Пётр Климентьевич Энгельмейер; 10 April 1855 – 7 July 1942) was a Russian engineer and philosopher of technology and positivism.
Engelmeyer (German: Engelmeier) was of German origin.
Engelmeyer was in correspondence with the Austrian physicist and philosopher of science Ernst Mach. He informed Mach of his growing influence in Russia, affecting such scientists as Nikolay Yegorovich Zhukovsky.
Engelmeier regarded all human activity as falling into three major categories: scientific, artistic and technical.
ernst mach Karl Lueger.