What are the limitations of treasure hunting metal detectors?

  • Thread starter Thread starter wolram
  • Start date Start date
AI Thread Summary
Treasure hunting metal detectors face limitations in discriminating between ferrous and non-ferrous objects, as well as ground minerals. The effectiveness of these machines largely depends on their field strength and frequency settings. Higher frequencies can improve sensitivity to small objects, while lower frequencies may better penetrate mineralized soils. The design and technology of the detector play crucial roles in its performance. Understanding these factors is essential for optimizing treasure hunting efforts.
wolram
Gold Member
Dearly Missed
Messages
4,410
Reaction score
555
This is a tresure hunting MD, the design needs a way of discriminating from ferrous, none ferrous objects, and minerals in the ground, what are the limits
of such a machine ?
 
Engineering news on Phys.org
I have recently moved into a new (rather ancient) house and had a few trips of my Residual Current breaker. I dug out my old Socket tester which tell me the three pins are correct. But then the Red warning light tells me my socket(s) fail the loop test. I never had this before but my last house had an overhead supply with no Earth from the company. The tester said "get this checked" and the man said the (high but not ridiculous) earth resistance was acceptable. I stuck a new copper earth...
Thread 'Electromagnet magnetic field issue'
Hi Guys We are a bunch a mechanical engineers trying to build a simple electromagnet. Our design is based on a very similar magnet. However, our version is about 10 times less magnetic and we are wondering why. Our coil has exactly same length, same number of layers and turns. What is possibly wrong? PIN and bracket are made of iron and are in electrical contact, exactly like the reference design. Any help will be appreciated. Thanks. edit: even same wire diameter and coil was wounded by a...
Thread 'Beauty of old electrical and measuring things, etc.'
Even as a kid, I saw beauty in old devices. That made me want to understand how they worked. I had lots of old things that I keep and now reviving. Old things need to work to see the beauty. Here's what I've done so far. Two views of the gadgets shelves and my small work space: Here's a close up look at the meters, gauges and other measuring things: This is what I think of as surface-mount electrical components and wiring. The components are very old and shows how...
Back
Top