"This myth is Busted"

[Funfinder]

Hallo???
(this is german and means: Hello???)

Hallo, it is called Halo Effect and finds usually not dissolve in the ground - only thin cheap iron sheet metal !
This whole topic here is some "LRL-pseudo-science" and nothing else.

If the 2000 years old silver coin once had a weight of 10 grams and now it has 9,50 grams,
exactly 0,50 gram "dissolved" into the ground and have been washed away by the water
over the years.

And not even some 1000 year old steel-nail dissolves much more.

Most motion detectors not even can recognize weak changes in ground-mineralization
so why they should be able to detect any pure hypothetical "metalization"-fields around the find?!

The only thing which really can have some effect is the "black earth":
Once lived people at spots with old finds and they burned a lot stuff there.
For the MD the black soil is a little bit like coke seen from the mineralization.
It's the "cultural layer" of places where settlements were long ago.


And now its time to see some real beautiful Halo-pictures and to learn about the 22° angle!

http://earthsky.org/space/what-makes...round-the-moon
http://ww2010.atmos.uiuc.edu/%28Gh%2...e/halo/22.rxml

[ivconic]

"...VII. Summary of the Halo Effect

The halo effect is real, not just on iron. It can happen by (A.) classical chemical mechanisms, (B.) biological-biochemical mechanisms, or (C.) both.

Once a halo forms, it would be expected to work in one or more of the following ways:

1.) By increasing the size of the conductive area centered on the metal object. Only a small amount of dampness is expected to be necessary for this, but more has a greater effect. When the entire ground becomes conductive (as on a wet salt beach), notice how a typical VLF detector reacts.

2.) By generating an electric field due to a potential difference. This does not require moving current. Regions of potential difference (i.e., voltage) are expected wherever a metal and its alteration products exist together in the soil. Interactions can be complex due to soil chemistry (e.g., charged groups on organic molecules in soil). What's important is that a potential difference gives rise to a DC electric field. The required amount of soil moisture is probably low.

The larger the extent of an electric field, the more it's going to interact with the coil of a metal detector.

3.) By generating a magnetic field due to the movement of charge. There has to be some dampness for ions to move, though really not that much; consider a so-called "dry cell" battery. More water helps, of course, such as after a couple days of rain.

A detector works by inducing a current in a metal object. This induced current causes the object to emit its own magnetic field. This in turn causes a back-induction in the search coil. If the target is already emitting a field of its own, this is going to make it easier to detect. I have found buried plastic pipes with a metal detector, but they always had water moving through them. Moving ions = magnetic field..."

[steaua581]

"Brigada tavarisii" i start to become nostalgic lol.

Another example of x-terra finds https://www.youtube.com/watch?v=Nhch81AbYF0
The Russian key word to search for on youtube is "клад" . Boy so many treasures found... i like watching those videos over and over Gets the blood pumping lol

[ivconic]

Since this is probably the closest analyze that i have seen so far; i preserved it in form of text to have it as copy on my disk.
In case that page disappears from the Internet in time.

[ivconic]

"Brigada tavarisii" i start to become nostalgic lol.

Another example of x-terra finds https://www.youtube.com/watch?v=Nhch81AbYF0
The Russian key word to search for on youtube is "клад" . Boy so many treasures found... i like watching those videos over and over Gets the blood pumping lol

Smallest silver coins!
My most favorite targets!
Deus simply likes them!

[Nandor]

Hi
Here were I live there are several sites that would be good to detect with my TGSL but it's illegal :P
ivconic do you hunt daytime?

[ivconic]

There is also one important point to emphasize here.
"Hallo" effect can also be diverse, due to factors so nicely analyzed at the same article: http://www.njminerals.org/metaldetec...aloeffect.html
And that's why various detectors will not always respond the same in such situations.
Some models will take all the advantages of that phenomena and some won't.
Simply because of the differences in signal processing and filters presented at those models.
steaua581's example on X-Terra at Russian sites perfectly indicates this.
Now... let's ask ourselves one simple question;
would it be truthful and fair to take such X-Terra model and compare it with another model from another brand; on artificially prepared testing bed with freshly buried targets?
Would such results be relevant? To whom?

[ivconic]

Hi
Here were I live there are several sites that would be good to detect with my TGSL but it's illegal :P
ivconic do you hunt daytime?

Yes of course. On distant sites, far away from urban areas.
It is "semi illegal" here too.
I don't go to sites where i can be easily spotted by authorities.
I hide!

[Nandor]

I see. Very interesting article. I have tested my TGSL in my garden with freshly buried targets and I was dissapointed on the results but no everything is clear and those test look funny!

[ivconic]

I see. Very interesting article. I have tested my TGSL in my garden with freshly buried targets and I was dissapointed on the results but no everything is clear and those test look funny!

Trust me on this, i made more than 50 TGS's diys so far. Maybe more, i haven't really counted.
I also worked with few of those for several months overall.
On my local sites.
TGSL will surprise you very positively on some real sites and of course it may disappoint you on some others.
The very same story as with any other existing brand or model.
TGSL is very good for silver targets too.
I sold dozen of those TGSL's to people in northern Serbia (Hungarian origins) and i got very positive feedbacks from them.
They reported me TGSL's excellent behavior on those small and smallest silver coins from Arpad Dynasty period.
Especially on plowed fields with a lot of trash around.
So i can only suggest to you; go out with it and do search!

[ivconic]

Funny trivia, maybe random coincidence; but ancient Romans frequently used Arsenic.

[Nandor]

That's nice to hear . Hungarian coins are very small I would like to find some. I'm very satisfied with my TGSL, after several hunts on some plantation fields I have trust in my machine. The Iron disc is very good even better than my friends White's , but Halo effect does trics Tesoro too, have found many rusty things. I will do as you said and search asap!

[ivconic]

That's nice to hear . Hungarian coins are very small I would like to find some. I'm very satisfied with my TGSL, after several hunts on some plantation fields I have trust in my machine. The Iron disc is very good even better than my friends White's , but Halo effect does trics Tesoro too, have found many rusty things. I will do as you said and search asap!

[Nupi]

Be serious!
I am not amateur nor novice to miss such simple things and to make false impressions.
It is the old site, dating exactly from that period. Coin was there for all that time. So as other targets we (my crew and me) collected that day.
I am serious detectorist enough to make sure and be certain about such things.
I have very strong rule to check the hole carefully after i take out the target. Also i know the difference in target signals against other possible signals.
But that's nothing so far to serve as any argument. You haven't payed attention on this little detail (sort of a trap, deliberately made):
"...It was detected on certain depth in soil and just minute after it was detected barely at 1/2 of that depth distance in air..."
I was precise about avoiding to mention exact depth.
And you fallen in that trap! Not you my friend!
Actually coin was very shallow! 10cm depth at most!
And once it is taken out of soil and held in hand for several seconds (it gets dry); same coin was barely detected at 5-6cm in air!
How come? Because it is "bad" silver, pretty awkward alloy. Very hard target. Locally called a "bilon" material. As you can see on photos.
So there is no room for any doubts there. We also had 20-30 more finds that day. But that one was most interesting as example.
Whenever i am trying to make a statement and prove something; i pick very precise examples. I never deal with random and approximate semi facts or semi truths.
This is too important subject to be approximative in such claims.
Like i said, this is just most recent example. I had similar cases so many times so far. There is not even slightest doubts in my mind about these facts.

OK my friend!

You wrote:

"I was precise about avoiding to mention exact depth. "
"Actually coin was very shallow! 10cm depth at most! "
I know with the brand detector you seek. So I had no elution it would be deeper.


"And you fallen in that trap! Not you my friend! "
That's not nice of you to make "sort of a trap"for your friends!! do you?

I wrote this:
(It may also be possible that the detector is triggered by another object (even iron) that lies deeper or near the coin. Also, moisture or spots with mineralization also be possible that the detector is triggered.) This can not apply to you, as your detector would rather mask the coin then trigger the coin. I had not thought of that. Sorry!

"And once it is taken out of soil and held in hand for several seconds (it gets dry);"
How hot was it ,that it gets dries in seconds ?? 80 degrees Celsius????
How seriously can I see the rest of your story ???

[ivconic]

OK my friend!

You wrote:

"I was precise about avoiding to mention exact depth. "
"Actually coin was very shallow! 10cm depth at most! "
I know with the brand detector you seek. So I had no elution it would be deeper.


"And you fallen in that trap! Not you my friend! "
That's not nice of you to make "sort of a trap"for your friends!! do you?

I wrote this:
(It may also be possible that the detector is triggered by another object (even iron) that lies deeper or near the coin. Also, moisture or spots with mineralization also be possible that the detector is triggered.) This can not apply to you, as your detector would rather mask the coin then trigger the coin. I had not thought of that. Sorry!

"And once it is taken out of soil and held in hand for several seconds (it gets dry);"
How hot was it ,that it gets dries in seconds ?? 80 degrees Celsius????
How seriously can I see the rest of your story ???

Nupi you are not reading my posts with attention.
I wrote:
"..The other day i witnessed this nice find: ..."
So i "WITNESSED" and not "I DISCOVERED".
That coin was discovered with X-Terra 70 not with Deus.
We had 3 Deuses and 1 X-Terra in a crew that day.
...
No i don't make traps for my friends. I don't make traps at all.
I just avoid to say every little detail, purposely.
You can think on why.

...
Yes there is always possibility of hard masking. I agree.
Very often situation. Deus is not immune on that too.
...
Coin dried from a moisture.
It takes just several seconds to hold it in hand to get it dry.
Especially on a sunny day under the killing sun.
And than situation with detection is much different.