Outside of broadcast radio, most AM users migrated to single ... For example, you can model a pure sine wave with the equation: S(t) = A sin(2*pi*F*t) where A is amplitude, F is the frequency ...

But what principles of the electromagnetic spectrum allow radio to work ... [lcamtuf]’s animations show the action of a sine wave on a 1/4 wave dipole, bringing a nearly imaginary concept ...

A hand qucikly moved up to continue the sine wave motion in the rope ... Diffraction affects radio and television signals. Long wave radio signals are much less affected by buildings, hills ...