3 ms·
That seems a lot less efficient than a metal detector. Perhaps they just aren't sensitive enough?
by Houshalter 9y ago
That seems a lot less efficient than a metal detector. Perhaps they just aren't sensitive enough?
- Herodotus38 9y agoWhile I don't know enough about metal detectors to know how sensitive they are, I suspect someone has looked into it because there would be a lot of money to be made/saved if you could, for example, use a detector to confidently rule out metal fragments in the eyes. Bear in mind these fragments are <1 mm, and if you are wrong and the powerful magnet moves it even a couple mm you could blind a person or worse!
- Sleeep 9y agoMetal detectors don't (typically) detect body jewelery so I don't think they are very useful in a clinical setting since they'd have to detect that sort of thing. Source: I have a bunch of body jewelery and been through a bunch of metal detectors and never set any off.
- Houshalter 9y agoWell yes the ones used in security checkpoints are probably only set to detect big pieces of metal like guns and knives. It's a pain if they go off every time someone walks through with an earring or a metal button or zipper. But people do use metal detectors to reliably find bottle caps, jewelry, coins, etc, under several inches of sand and soil.