What do scattering, reflection and refraction mean?

Scattering refers to the phenomenon of light radiating in all directions caused by the inhomogeneity of the propagation medium. For example, a beam of light appears pink after passing through diluted milk, but when viewed from the side and above, it appears light blue.

1. When light passes through media such as dusty air or colloidal solution, part of the light changes direction in many directions. It is called the scattering of light. Scattering also occurs when ultrashort waves are emitted into the ionosphere.

2. The phenomenon that two basic ions collide and the direction of motion changes.

3. In some cases, the phenomenon of sound waves propagating in different directions when projected onto uneven interfaces or particles in the medium is also called random reflection.

4. According to the different inhomogeneities of the medium, the scattering of light can be divided into two categories: the medium contains many larger particles, and their linearity is equal to the wavelength of the light wave in order of magnitude, causing The scattering of light is called suspended particle scattering. In a very pure liquid or gas, the fluctuation of density caused by the thermal movement of molecules causes the scattering of light, which is called molecular scattering. Reflex (fanshe) is the regular response of the body to internal and external environmental stimuli with the participation of the central nervous system. The phenomenon that sound waves, light waves or other electromagnetic waves encounter the interface of other media and still partially propagate in the original material

Such as light reflection, wave reflection.

Waves pass through different media When a medium is used, the direction of propagation changes due to refraction.

Refraction of light: When light is incident obliquely from one medium into another medium, the propagation direction generally changes. This phenomenon is called refraction of light