Contents

Contents : introduction -- early inventions -- measuring instruments -- instruments of observation -- manufacturing and automation -- motor cars -- trains and railways -- sea transport -- air transport -- inventions in the home -- a revolution in the office -- construction and buildings -- printing -- communication machines -- photography and film -- radio and television -- recording sound -- lifesavers -- medical inventions -- weapons and warfare -- calculators and computers -- the power of the imagination -- key dates in the history of invention -- index.