An electron gun and beam spreading.
In recent years the development of radio communication and of allied techniques such as radar and television has involved the use of higher and higher frequency signals. This trend has arisen, either from the need of more channels in the useful frequency spectrum, or, as in radar, from the need of d...
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Format: | Others |
Language: | en |
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McGill University
1956
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Online Access: | http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=110334 |