What are Ultra-Violetlight?

How do you make a curtain?

A curtain is a piece of textileintended to block or obscure light, or air-draft-1, or waterin the case of a shower. Curtains hung over a doorare known as porti-re. Curtains are often hung on the inside of a building's windowto block the passage of light, for instance at nightto aid sleep, or to stop light from escaping outside the building (stopping people outside from being able to see inside, often for privacy reasons). In this application they are also known as "draperies." Curtains come in a variety of shapes, materials, sizes, colors and patterns, and they often have their own sections within department-store, while some retailingare completely dedicated to selling curtains.Curtains vary according to clean ability, ultravioletlight deterioration, oil and dust retention, noise absorption, fire resistance, and life span. Curtains may be moved by hand, with cords, by press-button pads or remote-controlled computers. Measuring the curtain size needed for each window varies greatly according to the type of curtain needed, window size, and type and weight of curtain.An adaptation of the curtain may be a blind or, in warmer countries, a wooden window-shutterthat is fixed to the outside of the building to provide privacy and still keep the building cool inside. Curtains are a form of window-treatment-disambiguation, and complete the overall appearance of the house. Window treatment helps control the ambiance and flow of natural light into the room. The effect of drapery or curtains, is best seen in daylight, and with proper indoor light positioning, can look attractive even at night.curtain