we5yuwr s doesnt know what he (she) is talking about! RF no matter what the frequency, is an electromagnetic wave, where ultrasound is (as the name implies) a SOUND wave.
2007-02-14 01:42:45
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answer #1
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answered by justme 7
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RF (radio frequency) is an electromagnetic wave form that can be distorted by metal and magnetic fields but can travel in a vacuum
ultrasound is a physical wave form that requires a medium to travel in (solid or liquid) and will not travel in a vacuum.
Actually, all of the things you list in your added part apply to both rf and ultrasound (narrow pulses - if used for location, timing for location, reflection.)
2007-02-13 08:07:39
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answer #2
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answered by Mike1942f 7
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Ultrasonic Vs Ultrasound
2016-12-08 18:22:13
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answer #3
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answered by ? 4
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RF (radio frequency) is in a portion of the electromagnetic spectrum with such things as xrays, gamma rays, visible, uv and ir light. These waves (and particles) may move through a vacuum.
Ultrasound is at a frequency above ordinary audible sound. Sound is a mechanical wave that requires a medium. The sound power (measured in the logrithmic unit, Bells, or more commonly, decibells ) causes the medium to vibrate.
Radar (rf) may be used for location in space.
Similarily, Sonar, (sound) may be used for locating submarines under water.
Ultrasound may also be used to check out babies' sex before they are born.
2007-02-13 08:38:44
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answer #4
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answered by Anonymous
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Frequency is the ONLY difference. You can pulse or modulate any signal you want to.
And, oh yeah, RF is a whole hell of a lot "narrower" the ultrasound would be. I don't think that is a valid statement though.
You really need to get back to reading the books. You are WAYTHEFUCK off base here.
Frequency is the ONLY difference.
Frequency is the ONLY difference.
Frequency is the ONLY difference.
Frequency is the ONLY difference.
Frequency is the ONLY difference.
Frequency is the ONLY difference.
Frequency is the ONLY difference.
Frequency is the ONLY difference.
Frequency is the ONLY difference.
Frequency is the ONLY difference.
2007-02-13 08:10:49
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answer #5
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answered by we5yuwr s 1
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They are fundamentally a different type of wave. RF waves are electromagnetic waves (ie, microwaves, light, radio) and Ultrasonic waves are compression waves.
Ultrasound physically moves a lot slower and requires a medium. RF, on the other hand, requires no medium... otherwise we wouldn't be able to have radio communication with astronauts.
2007-02-13 08:08:30
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answer #6
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answered by smokingun 4
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