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Subject: Re: ultra sonic measurement

Date: 01/25/03 at 12:29 AM
Posted by: Russ Kincaid
E-mail: russlk@netzero.com
Message Posted:

In Reply to: ultra sonic measurement posted by Gad on 01/21/03 at 8:07 PM:

If my math is correct, sound travels at 330 meters/sec,so .5 meter corresponds to 1.5 millisecond. Your pulse has to be less than that in order to receive the echo. 35 meters corresponds to .106 seconds, so the time between pulses must be at least that long in order to time the echo. These times should not be a problem.


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