Chronological Developments of Wireless Radio Systems before World War II

Ancient Wireless Communications.- Search for Wireless Power Transfer Methods.- Electromagnetic Waves in Communication.- Marconi's Exploitation of EM-Waves.- Fessenden's Heroic Work in Wireless Telephony.- The Era of Vacuum Tube Developments and Spread of Wireless Telephony.- The Entry of Television.- E?orts Directed Towards Vehicular Communication.- Status of Wireless Air Defence Systems Before Word War-II.

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• História da Ciência
• Tecnologia WAP (sem fios)
• História da engenharia e da tecnologia

Chronology of wireless radio systems;Spark transmitters;Wireless radio broadcasting;Telephony;Telegraphy;Electromagnetic waves;Hertzian Waves