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A question about radio, sound, "wave length" etc.
"Gene Kearns" wrote in message ... On Wed, 16 Jan 2008 02:34:19 GMT, Short Wave Sportfishing penned the following well considered thoughts to the readers of rec.boats: |On Tue, 15 Jan 2008 16:50:09 -0800 (PST), Tim |wrote: | |OK, I picked this up on another board,a nd seeing that Eisboch, Tom, |Gene and Larry have had dealings with this stuff. I thought I'd |present it here. It has my curiosity up as well. | |Wavelength is the length measurement from the beginning to the end of |one full cycle. Or think of it another way, the distance a wave at a |given frequency to travel from 0 degrees to 360 degrees. | |Frequency is the number of wave periods passing a point in time and is |inversely proportional to wavelength - the higher the frequency of the |signal, the shorter the wavelength. Wavelength is the distance between repeating units of a propagating wave of a given frequency. SI units are used, where the wavelength is expressed in meters, the frequency in Hz, and the propagation velocity in meters per second. "Waveheight" is called "amplitude" and is the magnitude of the maximum disturbance in a medium during one wave cycle. The amplitude is not measured by time.... it is most likely measured by voltage. Hence, one is a measure of physical distance between repeating units (frequency) and the other is a measure of relative strength not measured in time. It is what you see on an oscilloscope. Time (distance) on the "X" axis and voltage on the "Y" axis. For further confusion, please see Time Domain Reflectometer..... -- Grady-White Gulfstream, out of Oak Island, NC. Homepage http://pamandgene.idleplay.net/ Rec.boats at Lee Yeaton's Bayguide http://www.thebayguide.com/rec.boats spectrum analyzer. |
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