What is the principle of X-ray imaging?

1 and x-rays have penetrability, fluorescence effect and photographic effect.

2. Because the density and thickness of human tissues are different, when X-rays pass through various human tissues, they are absorbed to different degrees, so the amount of X-rays reaching the screen or film is different, and images with different black and white contrast are formed on the screen or X-rays.

Physical characteristics:

1 and X-rays are invisible electromagnetic waves propagating in a uniform isotropic medium.

X-ray has no charge, so it is not affected by external magnetic field or electric field.

3. Penetration: X-ray has high wavelength energy and weak material absorption, so it has strong penetration ability.

4. Fluorescence: Some substances can stimulate visible fluorescence after being irradiated by X-rays.

5. Ionization: X-ray photons with enough energy can hit orbital electrons in atoms, causing them to ionize once. The knocked electrons still have enough energy to ionize more atoms.

6. Thermal action: X-rays are absorbed by matter, and most of them will eventually become heat energy, which will raise the temperature of the object.