What is the origin of X-rays?

The first discovery of X-rays was made by Tesla, who developed a number of experiments to produce X-rays. Tesla believed that with his circuits, "my apparatus can produce much more energy of Aix light, or X-rays, than can be produced by ordinary apparatus.

Tesla completed a number of experiments and confirmed his findings before Roentgen (including taking x-ray photographs of his hands and sending them to Roentgen), but did not make his discoveries widely known.In March 1895, most of his research materials were destroyed in a laboratory fire on Fifth Avenue.

On October 27, 2017, the list of carcinogens published by the World Health Organization's International Agency for Research on Cancer (IARC) was preliminarily compiled and referenced.X-rays and gamma-radiation radiation were added to the list of Class I carcinogens.

Expanded information:

X-ray radiation classification:

1, tough radiation

When a high-speed electron stream hits the anode target and is braked, the speed and direction of the electrons change dramatically under the action of the strong electric field of the nucleus. Some of the kinetic energy is converted into photon energy and radiated, which is called tough radiation.

When the voltage of the X-ray tube is low, the energy of the electrons blocked by the target does not exceed a certain limit, and only continuous spectral radiation is emitted.

2, characteristic radiation

A kind of discontinuity with only a few special linear spectra, its radiation is called characteristic radiation, and its characteristic spectrum is related to the target material.

Baidu Encyclopedia-x-ray