Dave Michelson wrote:

Derek Lyons wrote:

Another fellow who did his PhD in electromagnetics at UBC almost
thirty years ago went on to work as a defence scientist. He made
quite a name for himself by taking techniques used to predict
scattering and diffraction of EM waves and applying them to
underwater sonar. Again, it was the similarity in wavelength that
made this work.

The problem is this, active sonars don't operate in the ultrasonic
range. Not the sub-hunting ones anyways. But then *I* know this
from experience.

Derek,

I'm sure you do. But where do I state that the underwater sonar
operated in the ultrasonic range?

Since every message you've written has dealth with ultrasonics.. What
else could you possibly mean?

Oh, I didn't state that. You assumed it. Then you offered a correction
to something that I didn't write.

No, I've offered corrections to what you have written several times.

You certainly know how to make an impression.

Ah, once again you resort to flame and insult to divert attention away
from your failures.

D.
--
Touch-twice life. Eat. Drink. Laugh.

-Resolved: To be more temperate in my postings.
Oct 5th, 2004 JDL