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How An X-ray Works

Education : Biology

When studying biology, you become familiar with X-rays, that let surgeons penetrate through our skin and see our bones, revealing any problems therein, for instance broken bones.

But have you ever wondered how an X-ray works? Here's how:

X-rays were invented in 1895 by the German scientist, Wilhelm Roentgen.

Like light waves, X-rays are wavelike electromagnetic energy. X-ray photons have too much energy to be absorbed by most materials (e.g. skin) and therefore pass straight through.

However, the calcium atoms in bones are much larger, and therefore have a great efficacy for absorption of X-rays. The camera records the light that passes through the patients body: appears exposed to more light are dark, and other material is white: e.g. bones.


By: Stephen

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