MLA Citation: Bloomfield, Louis A. "Question 464"
How Everything Works 20 Jul 2018. 20 Jul 2018 <http://howeverythingworks.org/print1.php?QNum=464>.
464. If bones "stop" electrons, then why do we see a skeletal image on an X-ray? Would we get a negative image?
The bones cast shadows on the film; wherever there is bone, few X-rays strike the film. When the film is developed, it turns black wherever X-rays hit it. Thus the areas that were shadowed by the bone appear white.

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