Electromagnetic spectrum#

Might be the mother of all syntheses: a host of science legends are part of this story, from those making the precursor discoveries through to those who validated and expanded from Maxwell's synthesizing/unifying electromagnetic field equations -- Herschel, Ørsted, Faraday, Hertz, and Röntgen among them.

Maxwell's equations and analysis predicted the possibility and behavior of waves in the field, that those theoretical waves must travel at about the known speed of light, and that an infinite range of frequencies were implied. Hence, the spectrum of electromagnetic waves, a tiny fraction of which are visible to humans, and another small fraction of which provides the strata of radio communications (the realm ushered in by Hertz's incisive application and analysis of Maxwell's formulas).

As is often quoted, when asked if he stood on the shoulders of Newton, Albert Einstein replied "No, on the shoulders of Maxwell".