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Infrared Scanner

Heat up luggage and run through infrared scanner.
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Airports commonly use x-ray machines to scan luggage for security risks. These things are usually metal such as knves or guns; large soild objects such as drugs; or othrewise easily identifiable such as bombs.

An alternative scanning technology can be utilized for much cheaper. This is to use a oven like heater and an infared scanner. Luggage put on the conveyor belt would be put into the oven, which is blast protected by steel and concrete and then put through the infared scanner.

Objects that conduct very little heat will appear dull on terminal and metallic objects such as those that are deadly or destructive will be brighter. Similarly large nonconductive objects would be also obvious. Living contraband would be killed by the heat and explosives would potentially be detonated in place - opposed to a place where they are unexpected.

As the temperature of objects only has to increase slightly for them to be distinguished, this system should work quite well. And inexpenisvely at that. As for damage to belongings that may occur, since when have airports, in particular, cared about that?

schmendrick, Sep 15 2005

Wikipedia: Differential thermal analysis https://en.wikipedi...al_thermal_analysis
doesn't seem to have been used for luggage scanning yet [notexactly, Mar 01 2015]

[link]






       I'm in far a party.   

       actually I'm pretty pissed already and bored with this...
po, Sep 15 2005
  

       If an image was produced which showed not the relative heat of different stationary objects, but the rate of change of heat of different objects, this would work exactly as you propose. I like it!
bungston, Sep 15 2005
  

       yes, there are spelling mistakes. that happens when something is typed frantically when at work. welcome to the world wide web.
schmendrick, Sep 15 2005
  

       So, what, now you're at home where the shift key is busted? :)
half, Sep 15 2005
  

       To defeat this system, I would cover the inside of the luggage with insulation. Then anything else, which is inside, will be not heated in the first place, and not detected in the second place.
Next.
Ling, Sep 15 2005
  

       [half], no just lazy.
[Ling], hopefully the outside of your luggage conducts less heat than the insulation, or you will have one glowing suitcase and a whole lot of airport security ontop of you.
schmendrick, Sep 15 2005
  

       Yes, glowing plastic suitcases would certainly attract unwanted attention.
Ling, Sep 16 2005
  

       Infra-red = long wavelength = poor resolution = fishbone.
coprocephalous, Sep 16 2005
  

       I think you might be getting confused with radio waves, as 'long wave' is measured in metres.
Whereas infrared is measured in micro metres.
Ling, Sep 16 2005
  

       ..no I'm not confused - infra-red wavelengths are measured in hundreds (if not thousands) of micrometres (yup, whole millimetres), x-rays have wavelengths in the tens on nanometres. IR photons are typically one hundred to one hundred million times less energetic than x-ray photons. Longer wavelength, lower energy; IR scanners would be s-l-o-w.
Next.
coprocephalous, Sep 16 2005
  

       Now I'm confused. I thought you was talking about resolution, which relies on the wavelength. But now you are talking about energy, which also relies on the wavelength.
Since IR would not penetrate a suitcase wall, I hope you agree that it's irrelevant anyway.
Ling, Sep 16 2005
  

       Oh no, I've seen IR detectors see human body heat through an office partition wall. Took a long time though, and very indistinct. I could tell you the detector manufacturer, but then I'd have to be jolly beastly to you. But irrrelevant, yes.
coprocephalous, Sep 16 2005
  
      
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