Beyond IR...

[KatmanDu]

...way beyond. Past UV, even. :) These weren't taken with a Canon; but with a real-time x-ray unit. The x-rays are emitted from a 1.2 mr / pulse x-ray generator and expose a digital sensor behind the target. So much easier than film plates, but film has better detail. These are scanned from the prints, as I can't find what I did with the originals. :( Guess what the subject matter is!

http://www.5100bac.net/storage/xray1.jpg

http://www.5100bac.net/storage/xray2.jpg

[Dysturbed]

cell phone, no clue, cd player, kinky sex toy?

[Duder]

interesting. although X-rays and UV are on the opposite side of the electromagnetic spectrum from infrared, and technically come before it.

[owein]

#2...headphones or a sack of drugs? #4 is a crude bomb filled with nails.

[Rachellebee27]

1- I agree- cellphone, 2- toy bunny with some kind of electronics (possibly bomb?), 3- I agree- CD player, and 4- I agree- crude bomb

[KatmanDu]

although X-rays and UV are on the opposite side of the electromagnetic spectrum from infrared, and technically come before it.

Well, depending on what end of the spectrum you're starting on. :) From longest wavelength to shortest; IR, visible light, UV, X-ray. #1 is a cellphone, 2 is a stuffed bunny with a microswitch, battery, toggle switch and buzzer (kudos to Rachellebee27 for spotting that!), 3 is a cd walkman, 4 is an (inert) PVC pipe bomb with nails around the outside, battery, toggle switch, and clothespin switch. All of them are sitting on a PVC pipe end cap so they would stand high enough. The small circle in the lower right corner of each of them is a reference mark so you know which end is up... with film, we taped a penny to one corner of the film packet as a reference mark.

The bunny I use in classes on bomb threats and suspicious packages. I put it and it's identical twin on a table and ask a volunteer from the class to guess which one is the bomb and pick it up... 50% of the time, they pick up the one with the buzzer. Points out that there's no way to tell from the outside what is a bomb and what isn't, so they shouldn't be trying to guess and move suspicious packages around.