Speaker 1: Welcome to brain Stuff from how stuff works dot com.
Speaker 1: We're Smart Happens Hi, I'm Marshall Brain. We take X
Speaker 1: rays at the doctor's office for granted, but they really
Speaker 1: are pretty amazing. The idea of being able to see
Speaker 1: through the human body is pretty cool. And X ray
Speaker 1: machine is essentially a camera, but instead of visible light,
Speaker 1: it uses X rays to expose the film. X rays
Speaker 1: are like light in that they are electromagnetic waves, but
Speaker 1: there are a lot more energetic than light waves, so
Speaker 1: X rays can penetrate many materials to varying degrees. When
Speaker 1: the X rays hit the film, they expose it just
Speaker 1: as lightwood. Since bone, fat, muscle, tumors, and other masses
Speaker 1: inside the body all absorb X rays at different levels,
Speaker 1: the image on the film lets you see different structures
Speaker 1: inside the body because of the different levels of exposure
Speaker 1: on the film. Do you have any ideas or suggestions
Speaker 1: for this podcast? If so, please send me an email.
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Speaker 1: works dot com. M H m HM