http://physical-electrical-digital.nyufasedtech.com/files/original/fa4b1cdba1fede62845615ebe424700f.jpg

Radio

Creator
Guglielmo Marconi
Date(s)
1896

The invention of the radio is a process thanks to the efforts of many generations. "The first systematic and unequivocal transmission of electromagnetic waves was performed by Heinrich Rudolf Hertz in his experimental proof of their existence". In 1895, Guglielmo Marconi sent and received his first radio signal in Italy. "On 23 December 1900, the Canadian inventor Reginald A. Fessenden became the first person to send audio (wireless telephony) by means of electromagnetic waves, successfully transmitting over a distance of about 1.6 kilometers" (Belrose, 2002). In 1933, Edwin Howard Armstrong invented frequency-modulated (FM) radio. In 1965, the first master FM antenna system in the world was erected on the empire state building in New York City.

Sources
Bondyopadhyay, P. K. 1995. “Guglielmo Marconi - The Father of Long Distance Radio Communication - An Engineer’s Tribute.” In 1995 25th European Microwave Conference, 2:879–85. https://doi.org/10.1109/EUMA.1995.337090.

“Milestones:First Wireless Radio Broadcast by Reginald A. Fessenden, 1906 - ETHW.” n.d. Accessed May 12, 2018. http://ethw.org/Milestones:First_Wireless_Radio_Broadcast_by_Reginald_A._Fessenden,_1906#First_Wireless_Radio_Broadcast_by_Reginald_A._Fessenden.2C_1906.

Belrose, John. 2002. "Reginald Aubrey Fessenden and the Birth of Wireless Telephony". IEEE Antennas and Propagation Magazine. 44 (2): 38–47. Retrieved 29 October 2015.

Photography:

https://s3.amazonaws.com/s3.timetoast.com/public/uploads/photos/5772368/image_2.jpg?1477071582


Files