DOES A BURIED TREASURE EMITS ELECTROMAGNETIC RADIATION/ENERGY???

[Britman]

A metal detector is simply a tuned oscillator. The search coil is a part of that tuned circuit. If you introduce a piece of metal into the magnetic field created by the search coil it will change the frequency that the oscillator is tuned to and the frequency will change, hence the change in the note produced. That is all it is. nothing fancy and nothing high tech. The display is just to make you feel that you have something substantial for your money.

 

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[Jason in Enid]

A metal detector is simply a tuned oscillator. The search coil is a part of that tuned circuit. If you introduce a piece of metal into the magnetic field created by the search coil it will change the frequency that the oscillator is tuned to and the frequency will change, hence the change in the note produced. That is all it is. nothing fancy and nothing high tech. The display is just to make you feel that you have something substantial for your money.

OK, that covers 1940's metal detector technology. You might try moving AT LEAST into this century.

 

[Desertphile]

No. Note that all matter above absolute zero (i.e., everything that exists) radiates in the infrared spectrum. There are many scams, run by lying greedy *******s, who will sell devices that claim to detect underground treasure electromagnetically: other than undifferentiated ferrous metal detectors, they do not work, nor can they work. Elements have different spectra when at extremely high temperature, but elements in the ground are not in any way detectable in the same way.

 

[burlbark]

No. Note that all matter above absolute zero (i.e., everything that exists) radiates in the infrared spectrum. There are many scams, run by lying greedy *******s, who will sell devices that claim to detect underground treasure electromagnetically: other than undifferentiated ferrous metal detectors, they do not work, nor can they work. Elements have different spectra when at extremely high temperature, but elements in the ground are not in any way detectable in the same way.

Yes they are, but there is currently no detector on the market that can detect them with out a transmit coil to induce its own response that is detectable. There is too much back scatter radiation and emi that drowns out the thermal vibrations. Eventually a detector will be made that can "ground balance" this all out.