What does that even mean <| sep |> I ' m better than you <| sep |> On another note , you ' ve got to applaud the atlantic for the education coverage . Our of all the major magazines , they have a consistent , critical eye on higher education and K 12 . <| sep |> On the wet coast , maybe an umbrella ? Ha it rains so often no one here actually uses umbrellas <| sep |> If he ' s talking about the one post that was debunked because it was from the TTK era <| sep |> The frequency that you tune your radio to is called the carrier frequency . It is a high frequency , narrow wavelength signal . Sound , which is much lower frequency , wider wavelength , is added to the carrier wave using one of two common methods amplitude modulation AM or frequency modulation FM . AM signals are pretty simple , the narrow wavelength carrier signal is essentially squished in under the much wider sound wavelength . So when the sound is at a point of high amplitude , the carrier signal is tall and when the sound signal is at a point of low amplitude , the carrier wave is squished short . FM is harder to visualize , but kinda similar . In this case , when the sound wave is at high amplitude the carrier signal is squished down to a narrower wavelength , and when the sound wave is at a low amplitude , the signal is spread out to a wider wavelength . In either case , the radio in your car locks in on a carrier frequency , then reverses the modulation , leaving you with the original sound wave that is being played by the radio station . Here ' s a link if you want visualization and a more in depth e x p l anationdoesmodulationwork