2007-10-29 16:41:04 · 1 answers · asked by Indi 2 in Science & Mathematics ➔ Physics
Yes,
A wave of sound or radiation is a sine wave that goes up and down in a regular fashion.
Frequency = the distance between the wave endpoints.
Amplitude = the height of the wave.
AM radio broadcasts its signal by using the height of the signal. If you tired to broadcast a signal out of phase to send a stereo signal then it would only add to the original signal thus distorting it.
FM radio broadcasts its signal by using the distance between the wave endpoints (frequency) to send the signal. Since you can send two signals slightly out of phase with each other you can send a stereo signal. This is why TV and FM radios are able to carry stereo signals.
Look at the graphic in this article: http://en.wikipedia.org/wiki/Sine_wave
- The height of the wave is the amplitude
- The distance between each wave point where it crosses the zero axis line is the frequency.
-The red and blue lines are of the same frequency and amplitude, but out of phase with each other.
A long wave would have a large frequency, or a large distance between each wave length. Microwaves have a much smaller frequency.
2007-10-29 16:51:20 · answer #1 · answered by Dan S 7 · 0⤊ 0⤋