In my system, in the radio...

[Esteban]

... is the phase shift.

Exactly as I made with a FM radio since more than 20 years ago! So, IR can be used for electronic LRL.

[Fred]

you should read it again Esteban

[J_Player]

you should read it again Esteban

You mean an FM radio cannot receive acoustic waves?

Best wishes,
J_P

[Esteban]

You mean an FM radio cannot receive acoustic waves?

Best wishes,
J_P

Of course, in the paper is used microphone, but in radio appears variation in tone. I use other way. How many times I'll repeat it?

[Fred]

Now i am a skeptic

[Esteban]

Now i am a skeptic

Congratulations, you're in the correct point!

[Seden]

Think carefully Fred

Fred,

You need to not only read the text again but think through how the light beam would be affected by the reaction of the material being radiated. Esteban's method is correct and logical.

Now I am skeptical of you Fred. The light beam is being modulated just as if it were hitting a mirror that was shaking. In a way it's similar to the old system of using a long spring to create reverb in a guitar amplifier.

Thank you for being patient Esteban. Keep up the good work.

Randy

[J_Player]

Fred,

You need to not only read the text again but think through how the light beam would be affected by the reaction of the material being radiated. Esteban's method is correct and logical.

Now I am skeptical of you Fred. The light beam is being modulated just as if it were hitting a mirror that was shaking. In a way it's similar to the old system of using a long spring to create reverb in a guitar amplifier.

Thank you for being patient Esteban. Keep up the good work.

Randy

I did think about it. Isn't the material Esteban is irradiating the top layer of dirt? What seems hard to understand is how an IR light beam from an IR LED drawing a maximum of maybe 50ma can cause buried gold to become heated, considering the layer of soil stops the beam as you scan across the ground at long range. In fact, most IR LEDs beams begin to diffuse after a few inches so they are no longer truly a beam like a laser by the time they are 10 feet ahead of you. And being diffused at this distance as well as held to a shallow angle near to horizontal, any heating power remaining is also diffused as you scan it in front of you.

The page that Esteban posted shows an acoustically isolated container filled with inert gas that directs chopped IR light through a window to beat down directly on the target. It does not show that the target is hidden under dirt which is being illuminated at a shallow angle from an IR LED at some distance. Maybe it's just me, but it doesn't seem that shining an IR led 10 feet ahead on the surface of the dirt to identify metals that are buried is the same.

The diagram I see is not "exactly as Esteban made with a FM radio since more than 20 years ago". And I suspect any conclusions to the effect that it is "exactly the same" are untested speculations. That is, unless someone can provide some test data to show that the buried targets are actually verified to begin vibrating on a molecular level at the time when an angled IR LED illumination is swept past the ground where it is buried. A microphone monitoring a sample in an inert gas container buried four inches below the surface would convince me.

Best wishes,
J_P

[Seden]

In my system, in the radio

Fair enough J_P but consider the long time buried gold having some of it becoming leached and the gold atoms reaching the surface via the wicking effect. How much is needed to cause even the slightest changes in the IR light is unknown. Yes I would use a IR laser to be sure which would be more effective and have bought one for just such a test.

Other than the wicking effect of the atoms of gold I would tend to agree as light does not penetrate very far in dirt. Laser would do a better job but not to depth that's for sure and would certainly do the job of heating the gold atoms on the surface.

Yes we can play verbal tennis all day long and our opinions are like peoples noses, everyone has one. One of us will have to build and test it for the group and offer the results. Sort of like you volunteering to test the RangerTell wouldn't you think?



Randy

[Esteban]

Remember that the IR light is a long antenna focussed on target (this work better when target is buried for long time). Maybe 2 IR leds don't hot the target, but detect the variations and receiver sniff the difference. Don't know if this IR beam detect the molecular vibrations of materials. IR is also sensitive to copper and bronze, lead is "cold" material.

[Fred]

Fred,

You need to not only read the text again but think through how the light beam would be affected by the reaction of the material being radiated. Esteban's method is correct and logical.

Now I am skeptical of you Fred. The light beam is being modulated just as if it were hitting a mirror that was shaking. In a way it's similar to the old system of using a long spring to create reverb in a guitar amplifier.

Thank you for being patient Esteban. Keep up the good work.

Randy

I am sorry you became sceptical of me so quickly.

Reading it carefully, i could see IR penetration was a few microns or molecular layers.Then that the material should vibrate- while buried - and vibration effects should escape the medium.
All this with a simple IR led that in no way can heat a burried target, or make it "oscillate".
Then i became skeptical

Sorry Esteban, but i see absolutely no progress in you experiments, on the contrary.Maybe you are becoming aware that humans often fail - mislead by their passions - But i will continue reading your posts with interest.


Regards,
Fred.

[J_Player]

Fair enough J_P but consider the long time buried gold having some of it becoming leached and the gold atoms reaching the surface via the wicking effect. How much is needed to cause even the slightest changes in the IR light is unknown. Yes I would use a IR laser to be sure which would be more effective and have bought one for just such a test.

Other than the wicking effect of the atoms of gold I would tend to agree as light does not penetrate very far in dirt. Laser would do a better job but not to depth that's for sure and would certainly do the job of heating the gold atoms on the surface.

Yes we can play verbal tennis all day long and our opinions are like peoples noses, everyone has one. One of us will have to build and test it for the group and offer the results. Sort of like you volunteering to test the RangerTell wouldn't you think?



Randy

You might have a point about microscopic gold atoms that leach to the surface. But the ions measured below the soil are in the parts per trillion for gold that has been buried for tens of thousands of years and longer. So we are talking about negligible amounts at the surface, especially for micro gold atoms that leach from targets which have been buried less than a few hundred years.

The experiment to test it is easy. All you need is a sealed container with an IR transparent cover on the top. The soil around it will act as an acoustic barrier. A glass jar with a microphone leading to an audio amp would do, wouldn't it?

Best wishes,
J_P

[Esteban]

I am sorry you became sceptical of me so quickly.

Reading it carefully, i could see IR penetration was a few microns or molecular layers.Then that the material should vibrate- while buried - and vibration effects should escape the medium.
All this with a simple IR led that in no way can heat a burried target, or make it "oscillate".
Then i became skeptical

Sorry Esteban, but i see absolutely no progress in you experiments, on the contrary.Maybe you are becoming aware that humans often fail - mislead by their passions - But i will continue reading your posts with interest.


Regards,
Fred.

I'm leaving practical experiences 30 years in this matter, differences...

[J_Player]

I am sorry you became sceptical of me so quickly.

Reading it carefully, i could see IR penetration was a few microns or molecular layers.Then that the material should vibrate- while buried - and vibration effects should escape the medium.
All this with a simple IR led that in no way can heat a burried target, or make it "oscillate".
Then i became skeptical

Sorry Esteban, but i see absolutely no progress in you experiments, on the contrary.Maybe you are becoming aware that humans often fail - mislead by their passions - But i will continue reading your posts with interest.


Regards,
Fred.

Hi Fred,
Did you read what Seden wrote?
Gold can leach as ions and become traces of microscopic gold particles mixed in the soil at the surface. Maybe not much gold, but suppose we built a large IR searchlight ... maybe 50 IR lasers in a cylinder all pulsed at the same time and aimed it at the dirt. If there was enough power, then maybe the microscopic gold particles at the surface would vibrate hard enough to cause the dirt to start jiggling. Then you could walk around and listen for the sound of oscillating dirt to find your treasure location.

But be careful not to look toward the IR lasers.

Best wishes,
J_P

[Esteban]

With only 2 IR leds you detect a 0.5 cm long 3 mm diameter copper wire at 5 meters, buried 10 cm or less.