What happened in the 1880s?
π First Practical Photophone (1880): Pioneering wireless communication.
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Further Reading
Photophone - Wikipedia (wikipedia.org)
Alexander Graham Bell Invents the Photophone, the First Wireless ... (historyofinformation.com)
Alexander Graham Bell and the Photophone - ThoughtCo (thoughtco.com)
Alexander Graham Bell - Wikipedia (wikipedia.org)
Alexander Graham Bell's box telephone - National Museums Scotland (ac.uk)
How Alexander Graham Bell Pioneered Li-Fi With the Photophone ... (inverse.com)
Going Wireless In 1880 | Invention & Technology Magazine (inventionandtech.com)
Invention of Radio - Open Tesla Research (jimdofree.com)
Alexander Graham Bell and the Invention of the Photophone (onlinesafetytrainer.com)
Technology, History of - JF Ptak Science Books // Blog Bookstore (typepad.com)