Washoe County Library System

Photographs and text explore such inventions as the wheel, gears, levers, clocks, telephones, and rocket engines.

Learn about inventors and their amazing inventions.

Uses cartoon-style characters to introduce the revolutionary concepts behind everyday technology, profiling a range of life-changing inventions, including concrete, light bulbs, DVDs and microchips.

Presents inventions from the twentieth-century including the microwave, cellophane, assembly lines, and more.