fishball said:I thought Silver and Gold had no magnetic properties so in theory if you walked through the metal detector with bullion in your pockets you'd be fine with no BEEPS?
Never tried carrying bullion on a trip though, might try that at the end of the year when I go OS.
samboyellowsub said:The walk through dectectors work by "magnetic reflection" which works by first setting up a reverberating magnetic field. The machine knows what sort of signal profile it is suppose to pick up based on its settings or the gain (how high its turned up). The higher the conductivity of the metal, the "louder" the reflection. So gold and silver would actually be the easiest to detect. When a changing magnetic field passes across a conductor, it creates currents within the metal. Likewise, when there is a change in electric current (when the magnetic field goes back to zero for an instant), there are small magnetic fields created as the current dies down. These perturbations are what the walk through metal detector picks up.
I had a US silver dollar (Ag/Cu) in my pocket that I had forgotten to take out, and it went off as loud as if I had walked through with a steel pocket knife.
So when the gain is turned down, it is feasible that people with Titanium or stainless steel surgical implants can walk though, because they are poor conductors anyway.
Clawhammer said:samboyellowsub said:The walk through dectectors work by "magnetic reflection" which works by first setting up a reverberating magnetic field. The machine knows what sort of signal profile it is suppose to pick up based on its settings or the gain (how high its turned up). The higher the conductivity of the metal, the "louder" the reflection. So gold and silver would actually be the easiest to detect. When a changing magnetic field passes across a conductor, it creates currents within the metal. Likewise, when there is a change in electric current (when the magnetic field goes back to zero for an instant), there are small magnetic fields created as the current dies down. These perturbations are what the walk through metal detector picks up.
I had a US silver dollar (Ag/Cu) in my pocket that I had forgotten to take out, and it went off as loud as if I had walked through with a steel pocket knife.
So when the gain is turned down, it is feasible that people with Titanium or stainless steel surgical implants can walk though, because they are poor conductors anyway.
I wonder what happens when Chuck Norris walks through?
hyperinflation said:I flew back from Austria with 100 1oz phillies, and had no probs in Vienna, London, or Singapore...
:lol:samboyellowsub said:The metal detector doesn't make a sound, because it knows it will get round-house kicked to the floor.
Argentum said:itd be funny if they disd start confiscating gold/silver and you go on aflight with a full bag of hge(plated) layered 10 oz bars and they forc you to sell it at spot.
MatrixOpals said:I run into plenty of problems via domestic and international whenever carrying cut stones on me including carry-on luggage. Comes up as solid black unusual shapes. I always insists on private inspection in a room. However, I have yet to actually experience any aggressive actions from officers, simple interest in wanting to have my babies.
Generally, if black blobs are pulled up on their machine that is the size of your palm or larger they take interest in you. Most times whenever I carried just 25-50 stones they don't care.
Some actions are fully understandable.
They judge the contents based on quantity and the square area (or volume) it takes up. Well, from my perception.
LOL. That made my day.Clawhammer said:samboyellowsub said:The walk through dectectors work by "magnetic reflection" which works by first setting up a reverberating magnetic field. The machine knows what sort of signal profile it is suppose to pick up based on its settings or the gain (how high its turned up). The higher the conductivity of the metal, the "louder" the reflection. So gold and silver would actually be the easiest to detect. When a changing magnetic field passes across a conductor, it creates currents within the metal. Likewise, when there is a change in electric current (when the magnetic field goes back to zero for an instant), there are small magnetic fields created as the current dies down. These perturbations are what the walk through metal detector picks up.
I had a US silver dollar (Ag/Cu) in my pocket that I had forgotten to take out, and it went off as loud as if I had walked through with a steel pocket knife.
So when the gain is turned down, it is feasible that people with Titanium or stainless steel surgical implants can walk though, because they are poor conductors anyway.
I wonder what happens when Chuck Norris walks through?
shinythings said:I am quite sure that the only limit you have when travelling OS with precious metals is the carriers weight restriction .