Answering the question of "who invented radio" is another example of the complexities of defining inventors of inventions. There is no one "eureka" moment where a lone inventor in a lab created something totally new that changed everything.  Radio was an ongoing evolution of an idea over time. It is not as simple as picking out a single individual, or even a single point in time, that was the turning point in the creation of radio.

I started my career in technology in the 1970s working on military communications and citizens band radios. As I studied technology I remember Guglielmo Marconi was often mentioned as the "father of radio." Over time I have come to realize that Marconi is one of many contributions to the technology of radio.

What makes that task even more difficult with radio is that the term itself does not define a simple single item.

When I say radio, do you think of music broadcast over the airwaves? When I say wireless do you think of voice communications?

The concept of radio continues to evolve. In the early half of the 21st century the term wireless could be used to describe a short-range computer networking system, with technologies such as Wireless Local Area Network (WLAN), Wi-Fi, and Bluetooth. The term wireless is also applied to a mobile telephone system.

The concept of radio started as  the transmission of telegraph messages without connecting wires.  The etymology of "radio" or "radiotelegraphy" reveals that it was called "wireless telegraphy" which was later shortened to "wireless."   

Radio visionaries

Michael Faraday is best known for his work regarding electricity and magnetism. Faraday began his great series of experiments in 1831 on the concepts of electromagnetic induction. 

James Clerk Maxwell introduced the concept of electromagnetic field in the 1860s. Based on the earlier experimental work of Faraday and other scientists and on his own modification to Ampere's law, James Clerk Maxwell developed his theory of electromagnetism, which predicted the existence of electromagnetic waves.

Heinrich Rudolf Hertz conduct a series of experiments between 1886 and 1889 that validated Maxwell's theory.  The unit of frequency, cycle per second, was named the "hertz" in his honor.

The legacy of Henry Ford and his mark on the world of technology in the modern industrial era is significant. There are numerous debates in the realms of geek history as to what credit should be given to Henry Ford and Thomas Edison for various inventions.

People point out that Edison did not invent the light bulb, he was simply a business man. Edison realized that experimentation and research takes money. Edison's first invention was the Universal Stock Ticker in 1869. Edison used the money he earned from the stock ticker to start his "invention factory." Edison paid workers to conduct numerous tedious experiments so he did not have to do the boring manual tasks himself. I think that is pretty genius.

Remarks are made that Henry Ford was not an inventor, he was an industrialist that sold automobiles. While it is true that Henry Ford did not invent the automobile or the assembly line, he perfected the assembly line to create lower cost automobiles, and create an industry.

During the modern industrial era from the mid 19th century to the early 20th the world was changing rapidly thanks in part to geeks like Thomas Edison and Henry Ford. Even if Henry Ford and Thomas Edison invented nothing their contributions to science and technology changed everything.

Henry Ford automotive designer

The son of a Michigan farmer, Henry Ford was a childhood geek who loved tinkering with machinery. When Henry turned 16 years old his father William arranged for Henry to stay with an aunt in Detroit. Henry hoped to find work where he could learn more about machinery. For more than a decade Henry Ford worked in various shops perfecting his skills as a machinist. Henry began working at the Edison Illumination Company as a steam engineer in 1891. After his promotion to Chief Engineer in 1893, Ford had enough time and money to devote attention to his personal experiments on gasoline engines.