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The performance of arrays of dipoles and parasitic elements, with or without the effect of the ground. Other aerials discussed include the rhombic, the loop, the slot and the horn.
Discusses the need for aerials and gives a non-mathematical explanation of electromagnetic radiation. Quarter and half-wave dipoles and their properties are described.
Working aerial installations covering the whole field of radio, from long wave telegraphy to microwave radar and radio astronomy are shown. The order of treatment is roughly from low frequency to high...
A survey of the methods an instructor can use to teach through the medium of vision. A comprehensive selection of equipment is reviewed - chalk boards, flannel boards, magnetic boards, diagrams, models,...
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Learning on Screen