Product Description: This is a bilingual edition of Ernst Mach's classic 1875 text on the vestibular system. Mach was an eminent physicist who worked on the speed of sound (Mach as the unit of sound speed), on visual perception (Mach bands which describe contrast phenomena), mechanics (Einstein specifically refers to him as a decisive influence), and created the philosophical foundation of positivism...read more (view table of contents, read Amazon.com's description)