System Requirments: Adobe Acrobat Reader, Microsoft Word 2003. This CD-ROM Includes Works of "Ernst Mach ". He Was an Austrian Physicist and Philosopher and is the Namesake for the Mach Number and the Optical Illusion Known as Mach Bands. These Works As Follow: Contributions to the Analysis of Sensations/ Popular Scientific Lectures/ Popular - Wissenschafliche Vorlesungen/ Space and Geometry/ The Science of Mechanics