导演:
勒内·乔杜因
演员:
Jack Curran
类型:
动画
地区:
美国
/
加拿大
长度: 11m
发布日期: 1960-06-01
IMDb: tt0225150
简介
This film combines colour, animation and sound to clarify principles of radio wave transmission. It illustrates how antennas propagate radio waves and how they may be adapted to increase the bandwidth of transmissions. (The film was released for general use as a public service by the Royal Canadian Air Force.)