Re: A laser based landmine detector

On 4/11/2024 4:53 pm, Jan Panteltje wrote:

A laser based landmine detector
  https://www.sciencedaily.com/releases/2024/11/241101124009.htm
Research uses lasers to detect landmines, underground objects
Date:
     November 1, 2024
Source:
     University of Mississippi
Summary:
     Enough landmines are buried underground worldwide to circle Earth twice at the equator, but the identification and removal of these explosives is costly and time-consuming. New research could help solve the problem.
 So, now as to looking for gold (down under? billy has a go?) :-)

The laser's don't penetrate the ground - they just follow the movement of the surface of the ground which you have persuaded to vibrate by other means.
It wouldn't be a great way of looking for gold to mine. A lot pf people did go to Australian to look for gold to mine in the 1850's.
None of my ancestors did. They had more reliable ways of making their livings.
The one who got closest to the mine fields was one of my great-grandfathers, a Methodist minister, Dr. George Edwards Rowe who set up a hospital for the miners at Kalgoorlie around 1892.
He'd married a rich woman, so he didn't have to dig for gold himself.
--
Bill Sloman, Sydney