áttetszség

Áttetszség is a Hungarian term describing the property of a material to let light pass through while diffusing it, so that objects on the far side are not seen in sharp detail. The standard terms are áttetszőség or áttetszőség; áttetszség may appear as a nonstandard spelling in some sources.

Originates from prefix át- meaning through and the root related to áttetsző; the noun-forming suffix -ség yields the concept of a property. In formal language, áttetszőség is preferred, while áttetszség is sometimes encountered in nontechnical use.

Physically, translucency arises from absorption and scattering of light as it traverses a material. Light is transmitted but scattered by microstructures, inclusions, or rough surfaces, losing contrast. This differs from transparency, where light travels with minimal scattering, and from opacity, where transmission is negligible. The degree of translucency can depend on wavelength and viewing geometry.

Applications span design, architecture, and art, where diffuse light, privacy, or a soft visual effect are desired. Examples include frosted glass, parchment, wax, and some plastics. The same concept also influences imaging, photography, and product packaging.

Measurement and perception: translucency is described by transmittance (how much light passes) and haze (the amount of scattering). Tests use spectrophotometry and standardized hazing procedures. Perceived translucency varies with illumination, distance, and context, making subjective judgment important in design.