Abstract
RADIO broadcasting has greatly interested the public in radio science. There are many amateurs who have an excellent working knowledge of the art but lack that specialised knowledge of the science which alone can give them the confidence necessary for success. This book is clearly written and can be recommended to any one who wants to know standard modern practice and desires a simple introduction to elementary theory. A chapter is devoted to the future of radio, but the author rather confines himself to the history of past triumphs. A good description is given of the apparatus used for transmitting photographs over long telephone wires on a commercial scale; vacuum tube amplifiers, photo-electric cells and synchronising arrangements form an essential part of the method. It is therefore an adaptation of devices developed in connexion with radio communication, telegraphy and telephony. Future improvements in radio reception will probably consist of replacing storage batteries and. dry cells by devices which can be connected with the electric supply; for example, a suitable thermocouple. As amplifiers become more sensitive a large antenna becomes unnecessary. Many sets operate with a loop at present, but in the future this loop will probably be very small. The elimination of static disturbances by directive reception is also mentioned.
Practical Radio: including the Testing of Radio Receiving Sets.
James A.
Moyer
John F.
Wostrel
By. Pp. vii + 249. (New York: McGraw-Hill Book Co., Inc.; London: McGraw-Hill Publishing Co., Ltd., 1924.) 8s. 9d. net.
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Practical Radio: including the Testing of Radio Receiving Sets . Nature 116, 496 (1925). https://doi.org/10.1038/116496c0
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DOI: https://doi.org/10.1038/116496c0