The noun explanation of X-ray photography is

Is X-ray a particle stream generated by the transition of electrons in an atom between two energy levels with very different energy levels, or is it a wavelength between ultraviolet rays and gamma rays? Between electromagnetic waves. Its wavelength is very short, from 0.0 1 to 100 angstrom. It was discovered by German physicist W.K. Roentgen in 1895, so it is also called Roentgen ray.

Roentgen rays have strong penetrating ability, and can penetrate many substances that are opaque to visible light, such as ink paper and wood. This invisible ray can make many solid substances have visible fluorescence, make photographic negatives sensitive and ionize air. Ultra-hard x-rays with wavelength less than 0. 1 angstrom, hard x-rays with range of 0. 1 ~ 1 angstrom and soft x-rays with range of 1 ~ 100 angstrom.

X-rays were originally used for medical imaging diagnosis and? X ray crystallography. X-ray is also a kind of radiation harmful to human body, such as ionizing radiation.