1. The X-ray Machine!

2. Why We Selected This Subject Because, We think that the x-ray machine became an important technology to the modern world. People uses the x-ray machine for various fields like for medical purposes and for security.

3. What is the X-ray machine? X - rays are……. electromagnetic waves of short wavelength, capable of penetrating some thickness of matter . Medical x - rays are produced by letting a stream of fast electrons come to a sudden stop at a metal plate .

4. On 8 Nov, 1895, Wilhelm Conrad Röntgen ( accidentally ) discovered an image cast from his cathode ray generator. And then he knew that the rays from his cathode ray generator can penetrate through any kind of thick matter. Who created it? Wilhelm Conrad Röntgen

5. A week after his discovery, Rontgen took an X-ray photograph of his wife's hand which clearly revealed her wedding ring and her bones. The photograph electrified the general public and aroused great scientific interest in the new form of radiation. Röntgen named the new form of radiation X-radiation (X standing for "Unknown"). Hence the term X-rays (also referred as Röntgen rays, though this term is unusual outside of Germany). His wife’s hand