läbipaistmatuks

"Läbipaistmatuks" is an Estonian word that translates to "opaque" or "impenetrable" in English. It describes a material or substance that light cannot pass through. This property is determined by how a material interacts with electromagnetic radiation, specifically visible light. When light encounters an opaque object, it is either absorbed, reflected, or scattered, preventing it from reaching the other side.

In everyday contexts, objects like wood, metal, and thick fabrics are considered läbipaistmatu. In contrast, transparent materials like glass or water allow light to pass through with minimal scattering. Translucent materials, such as frosted glass or thin paper, allow some light to pass through but scatter it, making it impossible to see objects clearly on the other side.

The concept of läbipaistmatu is important in various fields. In optics, it's fundamental to understanding how we see the world and how optical instruments function. In art and design, the opacity of materials influences color, depth, and visual texture. In architecture and engineering, the choice of opaque materials is crucial for privacy, light control, and structural integrity. The opposite of läbipaistmatu is läbipaistev, meaning transparent.