fastness
131Artificial sunlight — is the use of a light source to simulate sunlight where the unique benefits of sunlight are needed, but where sufficient natural sunlight is not available or is not feasible. The concept has various applications including greenhouse lighting,… …
132Azerbaijani rug — Azerbaijani rugs are a product of Azerbaijan, an ancient center of carpet weaving. Dyeing wool At dyeing workshops, professionals dye yarns with dye stuffs mainly of plant origin, strictly following the centuries old traditional techniques of… …
