Very low frequency circuit very good

[humhum]

Even better:

But here Laser wave is in wrong um (micrometer) .

[WM6]

But here Laser wave is in wrong um (micrometer) .

It is about thermal IR (long wave infrared) laser, in this application ranging

from 6μm to 14 μm wavelength. This region is molecular vibration wavelength.

[humhum]

It is about thermal IR (long wave infrared) laser, in this application ranging

from 6μm to 14 μm wavelength. This region is molecular vibration wavelength.

Now is Okay ,Dear WM6

[Mojtabab88gh]

Hi friend's
I see a long range detector , use fm radio wave for detecting metal in depth , and builder saying can detect only old objects in depth .
Transmission using fm radio section , and receiver detecting maybe reflection or phase different and alarmed .
Is that possible ?
Any body have idea?

[IranGanj]

you mean some thing like Raven from treasureNow?

https://www.geotech1.com/cgi-bin/pag...aven/index.dat