© Encyclopaedia Films, Inc.; 10Jul46; MP890.
L'ELECTRODYNAMIQUE. Encyclopaedia Films, Inc., c1946. 1 reel, sd., 16mm.
© Encyclopaedia Films, Inc.; 8Jun46; MP843.
ELECTROMAGNETIC WAVES. De Forest's Training, Inc., c1948. 100 ft., b&w, 16mm. (Radio Electronics. Reel lesson 11)
Summary: A detailed study of the radiation of radio energy from the transmitting antenna and its interception by the receiving antenna.
© De Forest's Training, Inc.; 1Oct48; MP3904.
ELECTROMAGNETS. De Forest's Training, Inc., c1948. 100 ft., b&w, 16mm. (Radio Electronics. Reel lesson 4)
Summary: Demonstrates how electromagnets are employed to convert electrical energy into mechanical motion.
© De Forest's Training, Inc.; 1Oct48; MP3897.
ELECTROMAGNETS. Young America Films, Inc., c1949. 11 min., sd., b&w, 16mm.