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A metal detector is really called a magnetometer (Magnet meter) .
A magnetometer produces a strong magnetic field. Any metal objects passing through the magnetic field will react with the magnetic field and begin to conduct a very slight electrical current. This process is called induction. These electrical currents cause their own much weaker magnetic fields. The magnetometer detects that new magnetic field and the interaction with the primary magnetic field it is producing. When the interaction reaches a certain per-determined threshold, the alarm is triggered. At this point officers will use hand-held magnetometers (known as wands) to pin-point the source of the alarm. The noise they make is an audible representation of the strength of the secondary magnetic fields produced by metal objects as the wand passes by.
Magnetometers can be so sensitive as to detect tooth fillings, titanium implants and other non-ferrous metals. Most metal detectors in airports are tuned so they are not triggered for tooth fillings or small metal implants like surgical pins. But they will be triggered by larger implants like knee replacements, hip implants, etc.
Contrary to folk lore, an airport magnetometer CAN detect non-ferrous (no iron, non magnetic) metals like titanium, brass and aluminum just fine. As long as the metal can conduct electricity (which is one of the properties of elements called metal) it can be detected by the device.
Anyone with a pacemaker should never go through the metal detector since the magnetic field can affect the electrical pulses generated by the pacemaker to keep the heart beating at a steady rate. Though highly unlikely, it is possible that a person with a pacemaker going though a magnetometer could go into cardiac arrest due to fibrillation. Simply tell the attendant that you have a pacemaker and they will do a hand search instead.
As long as it can conduct electricity it will be detected by a well-tuned magnetometer.
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Do you have to remove earrings at the metal detector at airport?
No. The smallest item I have had to remove was my watch.
Will phone cases set off the metal detector at the airport?
If there is metal in the case it is possible that your phone case will set off the metal detector. It's always best to remove personal items before going through the metal detector. Unless the phone case has metal in it, it will most likely not go off in a metal detector. But, now airports have full body scanners and all personal items are asked to be removed.
What are the difference between sensor and metal detector?
metal detector is sensor
What metal can a metal detector detect?
A metal detector can detect all types of metal....depending on in what type of soil it is in.
When was the metal detector made?
The metal detector was invented in 1931 by Gerhard Fisher.
How do you bypass a metal detector with weed on you?
A metal detector will not find vegetable matter.
Is there a metal detector guy on the beach?
Depends on if he's a quantum "metal detector guy". If he is, then maybe.
How do you find the best metal detector?
Look for the metal detector with the most discoveries and deepest penetration.
Metal detector model zalota from Russia?
is there any metal detector company by the name "Zealot"
Can you walk through a metal detector with your inhaler in your pocket without the metal detector going off?
it depends if the inhaler is metal
How do you get metal through metal detectors?
In general, you can't get metal through metal detectors. Only the smallest bits of metal will not cause a metal detector to alarm. If the sensitivity of the detector is set too high, it may be possible to get a small piece of metal past the detector, but that is something that cannot be counted on.
Can duct tape set off a metal detector?
No, duct tape can't set off a metal detector.
