Ultrasonic Sound
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why ultrasonic sound can be confined to a narrow beam?
in many places i have come across this sentence- " ultrasonic sound has a high directivity because of its high frequency and thus can be confined to a narrow beam." i could not understand this. plz cud u xplain. also tell me why its used in SONAR?
plz help asap. its urgent.
thanks.
Here you find the answers to your question:
"Sound from ultrasound - Wikipedia":
http://en.wikipedia.org/wiki/Sound_from_ultrasound
"Mad Labs: Audio Spotlight - YouTube":
"BBC: Audio Spotlight - YouTube":
"Audio Spotlight featured on the Smithsonian Channel's SciQ - YouTube":
Cheers ebs
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