Welcome to brain Stuff from how stuff works dot com. We're Smart Happens Hi, I'm Marshall Brain. We take X rays at the doctor's office for granted, but they really are pretty amazing. The idea of being able to see through the human body is pretty cool. And X ray machine is essentially a camera, but instead of visible light, it uses X rays to expose the film. X rays are like light in that they are electromagnetic waves, but there are a lot more energetic than light waves, so
X rays can penetrate many materials to varying degrees. When the X rays hit the film, they expose it just as lightwood. Since bone, fat, muscle, tumors, and other masses inside the body all absorb X rays at different levels, the image on the film lets you see different structures inside the body because of the different levels of exposure on the film. Do you have any ideas or suggestions for this podcast? If so, please send me an email.
Podcast at how stuff works dot com. For more on this and thousands of other topics, go to how stuff works dot com. M H m HM