ultrasound????

[Anonymous]

If it works on finding babies in mommies bellies could it work on finding coins in dirt?
Seriously, has anyone ever heard of anyone experimenting with this concept?

 

[Anonymous]

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[Anonymous]

Hi Todd. Yes that tecnology will come. Not now as much as we want it to be. When it comes, we'll all be too old or dead when that happens. This hobby will continue to evolve from "Target ID" to Video ID or Photo ID machines. We might see a little bit of that technology before we die. It will happen, I guarantee it. I won't be around to collect the bets, but it is a no brainer. Look what's happening in our world with technology.
I'm 43 years old and grateful for the metal detecting technology advances I've seen these last few years. I'm glad I'm not 43 years in the 1970's when this hobby just started. I wish I had my EX II back then before areas were closed or developed into the now unreachable areas of hunting. My how the world changes....

 

[Anonymous]

Hi Todd,
I've been a certified UT technician since about 1981 although not practicing for most of that time. If my memory is correct, UT indicates variance in density. In other words, sound travels at different rates through materials of differing densities.In industrial or construction applications it is used to indicate voids in metals including welds.It might work to some extent on completely saturated soil but the presence of excessive voids would render it nearly unable to interperet all of the indications.If there is any air space between the transducer and the ground the ultrasonic signal would fail to travel past the transducer, which is the reason for the 'KY jelly'. Been a long time since I've done any ultrasonics and not the medical variety. I'm sure the medical variety uses somewhat different technology but the basic principles still apply.Besides all of that think of all of the potential lawsuits from all of injuries from those kids on the playground slipping in the 'KY jelly'!
HH Chuck

 

[Anonymous]

When you hit densities, like soil (or bone) you'll get a reflectance or echo and will appear white on the screen, i.e. the sound wave won't travel past the soil surface with all the jelly in the world. This is just in reference to a medical ultrasound. An industrial type will penetrate but you'll only get a pattern of different densities/reflectance not an actual picture, so your echo could be a stone or a coin, no way of telling without digging.

 

[Anonymous]

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