art definition of form A radio signal is usually very weak and should not travel long distances on its own. A method to handle this challenge is to use a strategy called Amplitude Modulation or AM. The technique imposes an additional signal on the already existing carrier wave that transmits the info. The amplitude in the second signal varies (increases or decreases) correspondingly on the amplitude in the first wave. These variations in amplitude or strength are employed through the receiver in order to reproduce audio and visual information (different sounds and images). Bringcleaner I was within my daughter's school this afternoon, helping without the pain . organization of the forthcoming fair. We had been trying to hang the streamers in seemingly unreachable places , contorting our body and our minds. I could not figure out methods for getting those streamers up around the tree branches without using little monkeys to achieve for us. Buddy.let's call her Sue had a good quality idea. She started tying the rope to a thick tape role and hauling it over trees and I used at the opposite end to catch the role and viola we were treated to the tree caught.