The answer is that a German physicist, Wilhelm Roentgen, discovered a new form of radiation in 1895. He called it X-radiation because he didn’t know what it was . Yes, it’s as simple as that. This mysterious radiation had the ability to pass through many materials that absorb visible light.
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X-rays are a type of radiation called electromagnetic waves . X-ray imaging creates pictures of the inside of your body. The images show the parts of your body in different shades of black and white. This is because different tissues absorb different amounts of radiation.
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