Tuning to a new station
The radio wave is a precise frequency of high-vibration energy that carries specific packets of information. We take it for granted that to find a particular transmission, we must turn a dial to move across the frequency spectrum. A broadcast on the FM band is fundamentally different from one on the AM band. Take Classic FM, for example. It transmits a specific genre of music. If you want to listen to classical music, that is exactly where you tune your radio. However, if you are looking for African house music or techno-trance, Classic FM is never going to satisfy that desire. You could write a letter to their management demanding to know why they don't play electronic tracks, but you already know the response they would offer: Classic FM plays classical music. There are other stations transmitting African house and techno. There is simply no point in looking for a broadcast on a frequency where it doesn't exist. Instead, you use the dial to navigate...