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Metal detectors are triggered to go off when they detect metal objects in the vicinity.
they detect metal
Depends on the size of the metal detectors, and the size of the metal under the surface of the earth. The bigger the metal detector, the bigger the piece of metal, the deeper down it will detect.
yes
Basically No. But the detector have a camera then yes.
Metal detectors are triggered by the presence of metal objects on your person, such as jewelry, keys, or belt buckles. If you consistently set off metal detectors, it may be due to the metal content in your clothing or accessories.
there are traces of iron in the bone so the metal detecters can detect them :-)
Metal detectors have been a staple of airport security for decades. These tall, boxy metal detectors are meant to be walked through and, theoretically, they will detect any metal objects that pass through them. However, if this was the case, then there wouldn't be any need for the hand-held metal detectors that travel authority agents and security guards usually have. Knowing how the larger metal detectors work, and their failings, can help take the confusion out of any misunderstanding.
Airport metal detectors are triggered by the presence of metal objects on a person's body, such as jewelry, watches, coins, keys, or metal implants.
I have researched this topic and found that you can indeed find precious metals when using a metal detector. These metal detectors will detect items such as silver, iron, metal, gold and platinum.
In general, most metal detectors have the capability to detect both iron and aluminum since they both conduct electricity. However, adjusting the sensitivity settings on some metal detectors may allow you to differentiate between the two types of metals to some extent. Specialized metal detectors for industrial purposes may offer more specific discrimination between different metals.
No. Metal detectors actually detect anything that can conduct electricity. To make metal from rocks you would have to smelt them, and this requires both a lot of heat, and something like carbon to reduce the ore. However most rocks don't even have any ore so heat cannot change rocks so that metal detectors can detect them.