brannsiu :
USAFRet :
brannsiu :
For the bad scanner, that scans my bag, and then I take it home, will there any radiation left or attached to the bag?
No, it doesn't work like that.
I doubt.
When there was serious radiation leakage in Japan in 2011, everybody who came from Japan and flights who came from Japan need additional examination in the airport for radiation. Doesn't that mean radiation could be "brought" by people. In the similar way, if a bag goes through a bag scanner, won't it "carry" some extra radiation ??
When people talk about radiation getting onto things or people, they are talking about radioactive contamination, caused by radioactive particles like uranium, plutonium, or cesium. These elements can have very fine dust that is radioactive. Radioactive as in the decay of these atoms is throwing off harmful high energy particles. They can also replace calcium in bone structures causing cancers and such years from the time of exposure.
When we are talking about x-rays and such we are talking about a radiating source, like an antenna. There is no transfer of particulate or anything here. Just electromagnetic waves. So, while sticking your face in the x-ray machine a bunch of times can be dangerous to you, the radiation doesn't leave the machine. There is no contamination.
Radiation is one of those words used in so many ways that it becomes confusing, so I understand where you are coming from, but the truth is that there is no way that airport scanners are harmful to passengers. Perhaps instead of doubting us, ask why we say what we say. We will gladly explain ourselves.