Maxwell's Equations

"From a long view of the history of mankind - seen from, say, ten thousand years from now, there can be little doubt that the most significant event of the 19th century will be judged as Maxwell's discovery of the laws of electrodynamics. The American Civil War will pale into provincial insignificance in comparison with this important scientific event of the same decade"
                                                                                                                 Richard Feynman

Equations three and four from Maxwell's Equations combine into the form of a wave
equation and Maxwell calculated the speed at which such a wave would travel.
Recognising a good approximation to the speed of light he said "This velocity is so
nearly that of light, that it seems we have strong reason to conclude that light itself
(including other radiations if any) is an electromagnetic disturbance in the form of
waves propagated through the electromagnetic field"

Jim Al-Khalili on Maxwell’s “speed of light” letter to Faraday.

Thus Maxwell is also credited with predicting the existence of a wide range of such
"Electromagnetic Waves" - a spectrum we now use as radio, radar and microwaves etc
and which connect us all "in time of light" (i.e. at light speed) - and Maxwell's
Equations have been called "the Hidden Heartbeat of the modern world".
Song - Maxwell's Equations gave us radio, radar and all the modern miracles we take for granted. This clip uses "studio mix" of The White Across The Blue, sung by Andrew Bargh and will be featured at IYL2015 closing Film Festival, Mérida, Mexico in Feb 2016