Philipp Frank

Philipp Frank (; March 20, 1884 – July 21, 1966) was an Austrian-American physicist, mathematician and philosopher of the early-to-mid 20th century. He was a logical positivist, and a member of the Vienna Circle. He was influenced by Mach and was one of the Machists criticised by Lenin in ''Materialism and Empirio-criticism''. Provided by Wikipedia