Editing History of radio (section)

== Discovery ==
{{See also|Invention of radio}}

[[File:Heinrich Rudolf Hertz.jpg|thumb|Heinrich Rudolf Hertz (1856–1894) proved the existence of electromagnetic radiation.]]

In an 1864 presentation, published in 1865, [[James Clerk Maxwell]] proposed theories of [[electromagnetism]] and mathematical proofs demonstrating that light, radio and x-rays were all types of electromagnetic waves propagating through [[free space]].<ref name="sparkmuseum.com">{{cite web|url=http://www.sparkmuseum.com/BOOK_MAXWELL.HTM|title=James Clerk Maxwell (1831–1879)|work=(sparkmuseum.com)}}</ref><ref name="google.co.uk">{{cite book|url=https://books.google.com/books?id=5HVlBG_8nWIC&q=Maxwell+Predicts+Waves&pg=PA122|date=1992|title=Newton to Einstein: The Trail of Light|publisher=Cambridge University Press|author=Ralph Baierlein|access-date=3 February 2018|isbn=978-0521423236}}</ref><ref>G. R. M. Garratt, ''The Early History of Radio: From Faraday to Marconi'', IET – 1994, p. 27</ref><ref>{{cite web|url=https://courses.lumenlearning.com/boundless-physics/chapter/magnetic-fields-and-maxwell-revisited/|title=Magnetic Fields and Maxwell Revisited|work=lumenlearning.com}}</ref><ref>{{cite web|url=http://abyss.uoregon.edu/~js/glossary/electromagnetism.html|title=Electromagnetism (glossary)|work=uoregon.edu}}</ref>

Between 1886 and 1888 [[Heinrich Rudolf Hertz]] published the results of experiments wherein he was able to transmit electromagnetic waves (radio waves) through the air, proving Maxwell's electromagnetic theory.<ref>Peter Rowlands, ''Oliver Lodge and the Liverpool Physical Society'', Liverpool University Press, 1990, p. 24</ref><ref name="Heinrich 1893">[https://archive.org/details/electricwavesbe00jonegoog/page/n35 <!-- pg=1 -->  ''Electric waves; being research on the propagation of electric action with finite velocity through space''] by Heinrich Rudolph Hertz (English translation by Daniel Evan Jones), Macmillan and Co., 1893, pp. 1–5</ref>