Constructing and testing a LRL would be pretty simple:
The device must be able to detect a 0.1gram gold nugget from 3 feet or one meter distance!
This makes shure you really will find a single coin from 5meters or a cache from 50m because the energyfield weakens square-expotential the more distance the treasure has.
If your LRL doesn't find that nugget throw it away!
OK, maybe there is a linear energy field! The laserpointers point is almost the same bright and small if in 1m or 10m. In this case the treasure must have an extrem energy-radiation in all directions like the sun or the treasure is buried exactly in the middle of a very short wave radiation source and the LRL so it's possible to detect the metals EM field blocking.
Another idea would be energizing the area by waves so the treasure starts to submit secondary signals like a glass on a table makes noises if there's a vibrating laundry-machine near. If gold really has such thing like "resonance frequency" first it needs some input for being able to starting resonating at all. And the weak earths magnetic field for shure is not strong enough for this task, especially with its heavy fluctuation.
You can detect or see a star from billions of lightyears because it radiates EM energy. But usually treasures don't submit radio-massages like: "I'm under this little tree over there, get me outta here!"
Treasures are virtually dead if you don't waken them up by a powerful energy-source like the MD sends into the ground. There is some natural electrostatic and magnetical plus artifical radio waves power available that for shure interacts with the buried metal but on micro, nano or even pico level and any "passive receiver" has to be very near or extremly sensitive to recognise those special interaction patterns.
The earthmagnetical and electrostatic fields have a huge fluctuation and the BIGGEST problem of our actually "seems sometimes and somehow to work" LRLs is:
They don't have any automatical gain control for this conditions!
Perhaps those work if EM-field or electrostatic-ground sky difference is extremly high so they get a good "contrast-factor" but the slightest rain-shower is enough to end this.
Think about all of this and please stop turning in circles and circles and circles for ever and a day. As example this "Mineoro Issue" exists already since 2006 and NOTHING has changed so far, nothing! It's like switching on the TV, seeing that it won't work, waiting for 1 week, next try, and every week for the next 5 years again and again! And why? Because some owners of this TV claim that once in the year there's some sort of strange picture showing treasures there but no repair service has any clue if this is real!
Amusing wonderworld of LRLs but we wanna have something that proofen works and no time to waste another 5 years!
