Take the 2-minute tour ×
Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. It's 100% free, no registration required.

If airport security scanners of any kind (xray, thermal, whatever else they use) looked at two items:

  • A printed paper textbook
  • The same printed paper textbook into which we have inserted a regular folded US letter-sized paper with something written on it with a pencil, pen, marker, etc.

Could the security be able to detect the difference between the two?

share|improve this question
6  
Are you planning on trying to smuggle something through airport security? –  Kyle Kanos May 14 at 18:32
1  
Hope you're using a proxy. –  BMS May 14 at 19:41
    
The same answer here applies: physics.stackexchange.com/questions/112726/… Just plug in different numbers. And don't smuggle illegal things. –  Davidmh May 15 at 8:25
    
If they are using a laser system they possibly could. I doubt they would because it'd be expensive, huge, and could possibly kill people. –  Steven Walton Aug 24 at 2:34

1 Answer 1

No, it would look exactly the same as far as the x-ray is concerned.

Think x-ray passing through paper and ink.

Thermal?

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.