On 8 November 1896 Wilhelm Conrad Rontgen physicist. Starting the study and research of X-rays while experimenting with vacuum tube in the experiment of Rontgen began using cathode ray generator through pipe glass vacuum.He found that the light from the cathode ray generator this through various materials (such as paper, wood, book) he have begun to put other objects several types in front of this machine. And he found.Two months later he started the research. The proof and published in 1896 in the report name On a New Kind of Radiation which this book reports mentioned the radiation X which stated that a color also specify type. (hence the name before that.X), resulting in the name of X-rays are used here to more than a name that scientists and the radiation component must Rontgen Ren (rays) and make Rontgen Nobel Prize in physics from the discovery and proof of this phenomenon.