Instructional Video Catalog:   Title Description
Title:   " Distant Voices "

The Normans' use of stirrups caused other armies to search for money to reoutfit. They dug mine shafts deeper; and when the shafts began to flood, scientists investigated vacuums and air pressure. These studies formed the foundations for radio, telephones, and space telecommunications.

Production Date:  1978
Length:  52 minutes
Ordering:  NETCHE Member checkout
Subject:  Technology Science
Non-Members:  Not available
Series Title:  CONNECTIONS


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