wristwatch and wedding ring not included
Backscattering occurs in quite different physical situations. The incoming waves or particles can be deflected from their original direction by quite different mechanisms:
Rayleigh scattering of electromagnetic waves from small particles, diffuse reflection from large particles, or Mie scattering in the intermediate case, causing alpenglow and gegenschein, and showing up in weather radar;
inelastic collisions between electromagnetic waves and the transmitting medium (Brillouin scattering and Raman scattering, important in fiber optics, see below;
inelastic collisions between accelerated ions and a sample (Rutherford backscattering)
Bragg diffraction from crystals, used in inelastic scattering experiments (neutron backscattering, X-ray backscattering spectroscopy);
Compton scattering, used in Backscatter X-ray imaging.
In fact, they can check out your private parts quite as easily as if you were totally disrobed.
If they say that the DUDES who use this are not going to reallly look forward to scanning chicks, well then that's just a damned lie.
It'll be a free STRIP PARLOR, no joke.
The representation whitewashed all this.
Currently in use by the U.S. Military in Iraq and Afghanistan
it looked hand drawn... nothing like the other back-scatter soft x-ray images I've seen... do a search on google image search... it honestly looks kinda fake compared to the other ones
What would probably work better, and be a great deal easier, is to require everyone that wants to board an airplane to eat one slice of bacon.
That's not a backscatter image, that's the picture they used when they were briefing on how the test was set up.
I looked but couldn't find the actual web site where they had that picture and two pictures that WERE actual backscatter pictures.