| ??? 05/22/06 19:18 Read: times |
#116886 - Yes, ultrasound Responding to: ???'s previous message |
Chitrakar said:
and what about using sound instead. er.I meaning measuring the time of sound travels. I mean when through water, speed of sound becomes faster. this difference could be used to determine the water level. Yes, sound is used for this purpose, ultrasound. But not inside the water, but above the water. Ultrasound is directed to surface of water and becomes reflected by it. Time of travel gives distance. Kai |
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