Watch a stereo X-ray video!
Do you have a pair of stereo glasses (cyan/red or red/green) hidden away in one of your drawers? If so, take a look at this X-ray video of a test object (five sheets of plastic held in a frame and on which are positioned different types of materials). These images are from a set of 180 projections taken in an X-ray tomography test. There is a difference of 5 degrees between the projection for the right and for the left eye in each view.