Poolläbipaistvad
Poolläbipaistvad refers to a state of matter or material that allows light to pass through it, but not in a clear, undistorted way. This is distinct from transparency, where light passes through unimpeded, and opacity, where light is completely blocked. In a poolläbipaistvad substance, light rays are scattered as they travel through the material, resulting in a blurry or diffused view of objects on the other side. Examples include frosted glass, thin paper, or certain types of plastic. The degree of poolläbipaistvus can vary, with some materials allowing more light to pass through than others. This property is often exploited in various applications, such as for privacy screens or to diffuse light sources to create softer illumination. The scattering of light occurs due to variations in the refractive index within the material or due to small particles suspended within it. These irregularities cause the light waves to change direction unpredictably.