Radio Wave Power

Ever wonder why at the turn of the century why radio was so popular and why anyone as long as you had a radio set you could listen to that radio. Old fashioned radio sets, besides being massive didn’t need an external power source. This old radios are known as crystal radio sets. Okay I ... (function() {var s = document.createElement('SCRIPT'), s1 = document.getElementsByTagName('SCRIPT')[0];s.type = 'text/javascript';s.async = true;s.src = 'http://widgets.digg.com/buttons.js';s1.parentNode.insertBefore(s, s1);})(); Digg Diggvar dd_offset_from_content = 40; var dd_top_offset_from_content = 0;