Just within a hundred years we spread ‘waves’ everywhere. You can listen to radio or talk via your cell phone in almost every corner of our blue planet. Satellites and WiFi antennas will soon provide full broadband coverage everywhere - so you can tune into the intranets and the full media spectrum of radio, voice and webtv wherever you are.

While a primitive radio set can built with the most basic of electrical components modern communication relies on complex digital technology. I wonder if things like emergency radio will be any use in the future - when nobody owns any equipment to listen to it.

Radio Waves are the very essence of modern communication.