can a metal detector detect banknotes?

Answer 1

If there are enough notes with the metal strip in them and the detector is sensitive enough, they would be noticed, yes. Airports do check for these things too. Particularly when they're interested in making sure large sums of cash don't go walking out of a country into another.

I do have in mind the notes that we use in Europe. They have a thin metallic strip in them among several other anti-counterfietting systems. The numbers are also printed on with a shiny ink that changes color depending from which angle you look at them, like the paint job on some customized cars.

Answer 2

No, certainly not any conventional detector I have seen, used or read about.

They just detect gold, silver, iron, bronze, copper, tin, aluminium etc (and alloys of the above and others).

The amount of metal needed in a banknote (I assume you are thinking of the metalic strip running down the middle of some bank notes) is not substantial enough in quantity to be detected.

I suppose, in theory, if you had a suitcase full of banknotes, each with a metalic strip, packed tightly together, a conventional metal detector might conceivably be able to detect something from them, but I have not seen any tests done to that effect.

Answer 3

Not any of the metal detectors you usually think of, no. There are chemical sensors that can detect the ink in banknotes, however.

You could probably construct a metal detector that would be able to detect the metallic content in banknote ink... but everything containing material even slightly metallic would trigger it and it would be completely useless.

Answer 4

Metal detectors detects changes in the magnetic field made by ferromagnetic metal - iron, steel, cobalt, nickel. This changes can be either a reluctance reduction or a inductance increasing in a oscillatory circuit, when the oscillatory frequency changes.
so ordinary bank notes cannot be detected by these detectors although the notes could be make detector sensitive if a magnetic stripe was put inside them, by example.

Answer 5

dude it's a metal detector not a note detector

Answer 6

It only detects metal. :-( sorry dude. hence 'metal' dector