This 3-vol. science title encourages students to learn about technological devices, processes and terms as well as various nontechnical topics such as ethics and technology's impact on society. Entry topics include tunnels, holography, robots, nuclear energy, steam engines and more. Sixty-four full-length articles include information on the science behind the subject, details of its function and uses, relevant historical facts, possible future applications and various social implications. The main branches of technology are highlighted: civil engineering food and agriculture communication health and medicine electronics and computers manufacturing and materials energy and transportation Features include more than 195 photos and illustrations, a timeline, a glossay, cross-references and a subject index.