What is the principle of ordinary photographic X-ray machine?

X-ray machine principle: 380V power electricity is converted into 40KV to 100KV through high voltage transformer, and this voltage is applied to the two poles of a vacuum tube with filament. If the filament is lit at one end of the vacuum tube, the high voltage will drive the electron cloud on the filament to move to the other end at high speed. After high-speed electrons bombard the target surface, 99% is converted into heat, and 1% is converted into X-ray, X-ray.

X-rays can penetrate human tissues and organs. Different densities and thicknesses of human tissues and organs have different absorption of X-rays, resulting in different attenuation after X-rays pass through different human tissues and organs. Photographic film can record the X-rays absorbed by human tissues and organs abstractly and form images. This is the general principle of ordinary X-ray photography.