What makes metal detectors work Consumer-grade metal detectors can help you discover everything from buried treasure to loose change or hidden wiring. Many people enjoy spending hours sweeping over… ...

What makes metal detectors work Consumer-grade metal detectors can help you discover everything from buried treasure to loose change or hidden wiring. Many people enjoy spending hours sweeping over… ...

What makes metal detectors work Consumer-grade metal detectors can help you discover everything from buried treasure to loose change or hidden wiring. Many people enjoy spending hours sweeping over… ...

What makes metal detectors work Consumer-grade metal detectors can help you discover everything from buried treasure to loose change or hidden wiring. Many people enjoy spending hours sweeping over… ...

But how exactly does a metal detector determine there’s metal to be found among rocks, roots, sand and soil? There is a scientific principle at work, and it all has to do with electromagnetism ...

But how exactly does a metal detector determine there’s metal to be found among rocks, roots, sand and soil? There is a scientific principle at work, and it all has to do with electromagnetism ...

But how exactly does a metal detector determine there’s metal to be found among rocks, roots, sand and soil? There is a scientific principle at work, and it all has to do with electromagnetism ...

What makes metal detectors work Consumer-grade metal detectors can help you discover everything from buried treasure to loose change or hidden wiring. Many people enjoy spending hours sweeping over… ...

But how exactly does a metal detector determine there’s metal to be found among rocks, roots, sand and soil? There is a scientific principle at work, and it all has to do with electromagnetism ...

But how exactly does a metal detector determine there’s metal to be found among rocks, roots, sand and soil? There is a scientific principle at work, and it all has to do with electromagnetism ...

How we chose the best metal detectors for gold Gold discrimination—the ability to suss out gold and not, say, metal nails—is one factor that might make a good gold metal detector.

The question is: Do metal detectors in schools really work? "This year alone there has been a shooting, stabbing, recovered loaded firearms," lists Boston City Councilor Michael Flaherty.