Brazilian quartz goes to war

Duration: 0:10:00

Year Published: 1943

Creator: OIAA

Format: 16mm

Color: B&W

Sound: sound

Description: Emphasizes the role quartz plays in war communications, showing how a wafer of its crystal makes possible the simultaneous broadcasting of many stations without overlapping. Pictures the hard manual labor involved in mining Brazilian quartz, the inspection, the exportation of most of it to the United States, and the laboratory cutting of it to fit the complex instruments of World War II.

Complete Record:

Metadata Source:Educational Film Guide 1946

2 users have this film:
Indiana University Library Moving Image Archive, University of Georgia Walter J Brown Media Archives and Peabody Collection

Related films:

Original permalink · Record added: 2024-04-20 16:01:25