Around and present, surrounding us, every time and all times are rays bound together in electric and magnetic fields called electromagnetic radiation. They travel at the speed of light. Nothing goes faster than their energies in a vacuum. It is as normal as the rain, our oceans, the sky, rainbows, animals, etc except, unlike these other objects we can’t see the full length and breadth of the electromagnetic spectrum. The part of it we can see called light makes a tiny part of the whole. The seven parts of the spectrum in ascending frequency are Radio wave, Microwave, Infra-red, Light, Ultraviolet, X-ray, and Gamma-ray. The theoretical equations linking electricity and magnetism had been made in 1873 by James Clerk Maxwell. So, when Henrich Hertz first discovered radio waves in 1886, giving proof to Maxwell’s equation he thought no more of it. It was G. Marconi who in 1896, would get a patent for its use and deploy it towards wireless communication. It transformed the world.