Sounds That Can't Be Heard

Introduces ultra-sonic vibration and tells how it is used for measuring the quality of 'MEAT ON THE HOOF,' in working with radar and sonar, in detecting flaws in metals and in precision cutting and drilling.

Related films

Sources

  1. A-V Online (National Information Center for Educational Media). CD-ROM database of educational and documentary media, compiled and maintained by the National Information Center for Educational Media (NICEM). — title, creator, length, format, sound, description
  2. 16mm Filmography (legacy record) — catalog record