Grandes inventos I [videorecording].
[Barcelona] : Planeta, 2003.
1 videodisc (64 min.) : sd., col. with b&w sequences ; 4 3/4 in.
Inventos antiguos: describes examples of technologies found in ancient civilizations that indicate the knowledge of steam power, magnetism, and other principles centuries before they were 'discovered' and exploited in more recent times as well as other technologies like the lifting of heavy stones in ancient architecture that are still not understood by modern man.
Inventos de guerra en la vida civil: discusses the history of many modern inventions, such as plastics and the internet, that owe their existence to military research. Shows how military technology is being coverted for civilian uses