In November 1895, Wilhelm Conrad Roentgen discovered these ‘strange rays’ now known as X-rays, in Wurzburg University.
Further experimentation showed that they were able to penetrate through objects such as tissue and bone.
The image shows an X-ray taken of Roentgen wife's hand and as you see the medical applications of the use of X-ray is very obvious.
Dr. Otto Walk off took first dental radiograph using a 25-minute exposure.
Dr. C. Edmund Kells took the first intraoral radiograph in early 1896.
Note: The earliest X-ray tubes had absolutely no shielding around them and no collimation of the beam.
X-rays are produced in a glass tube with a vacuum inside, which also contains a cathode and an anode.
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