InventionFull-color photos. The evolution of human civilization is traced through the tools people have devised to shape and improve the world--from the simple abacus to timekeeping items, telephones, and complex silicon chips. |
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17th century abacus acid ancient Egyptians angles axle battery beads beam blade bow drill bronze bulb calculating called candle cathode ray cathode ray tube cell century A.D. China Chinese Christian Huygens clock coated copper created cylinder daguerreotype developed device dial diaphragm early earpiece Edison electric current electrode Electron tubes Europe fibers film fire flint gears glass Greek scientist hammered heat holes images internal combustion engine invented inventor iron ivory lamps LANTERN CLOCK later lens lenses light machines measure mechanical metal mill modern mold Mouthpiece Napier's bones needles numbers object Pattern welding photographic plastic plates printed produced pump record rods Romans rotated screen shaft silicon chip simple spinning steam engine stick stone stylus tape telephone telescope Thomas Edison Thomas Tompion thread transmitted turned valve voltage weights wheel wick Wilhelm Röntgen wire wood wooden handle zinc