how does an x-ray work?
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Imagine you had a sheet of bullet proof metal in the shape of a skeleton and behind it was a big sheet of paper.
Now imagine you get a gun with a very high fire rate and start shooting at it.
Any bullets that miss the skeleton with go on to make a hole in the paper, and any ones that hit the skeleton will be stopped, not damaging the paper. Eventually if you look at the sheet of paper all that will be left is the shape of the skeleton.
That’s basically the idea. X-ray radiation penetrates flesh but not bones, so if you put somthing with bones it in between an x-ray detector and an x-ray emitter then turn on the emitter, everywhere that the emitter doesn’t detect getting hit is where a bone must be.
Basically what you see an bones in an x-ray image is the shadow bones cast on the x-ray detector.
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