Biology in the Laboratory

Seeing Small

What are X-rays?

X-rays are electromagnetic radiation with short wavelengths (10-3 nanometers) and a great amount of energy. They were discovered in 1898 by William Conrad Roentgen (1845–1923). X-rays are frequently used in medicine because they are able to pass through opaque, dense structures such as bone and form an image on a photographic plate.


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