A square dances.
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.)
A jetliner spans the miles, sheering through clouds to open sky and scenic vistas of the provinces below. Glimpses of town and country, of people of many ethnic origins, of a resourceful and industrious nation - impressions it would take days and weeks to gather at first hand - are brought to you in this vivid 1800-kilometer panorama.
