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UPF (ultraviolet protection factor) represents the ratio of sunburn-causing UV without and with the protection of the fabric, similar to SPF (sun protection factor) ratings for sunscreen. While standard summer fabrics have UPF ~6, sun protective clothing typically has UPF ~30, which means that only 1 out of ~30 units of UV will pass through (~3%).
A shade sail − or somewhat more precise a textile sunshade sail or a textile sun protection sail − is a device to create outdoor shade based on the textile basic technology that can be found in a ship's sail. [1] Shade sails use a flexible membrane tensioned between several anchor points. While generally installed permanently, they are ...
In 1913, Crookes lenses [17] were introduced, [18] made from glass containing cerium, which completely blocked ultraviolet light. [19] [20] In the early 1920s, the use of sunglasses started to become more widespread, especially among movie stars. Inexpensive mass-produced sunglasses made from celluloid were first produced by Sam Foster in 1929.
In personal protective equipment (PPE), cut-resistant gloves are those designed to protect the wearer's hands from cuts while working with sharp tools. They can be divided into metal mesh gloves, cut-and-sewn, and seamless knitted gloves. [2] Metal mesh gloves are a form of chainmail, and are made of rings of stainless steel. They are typically ...
Photosensitive glass vase. Photosensitive glass, also called photostructurable glass (PSG) or photomachinable glass, is a glass in the lithium-silicate family of glasses onto which images can be etched using shortwave radiations, such as ultraviolet. [1] Photosensitive glass was first discovered by S. Donald Stookey in 1937. [2] [3] [4]
A metal mesh may be woven, [2] knitted, welded, expanded, sintered, [3] photo-chemically etched or electroformed (screen filter) from steel or other metals. In clothing, mesh is loosely woven or knitted fabric that has many closely spaced holes. Knitted mesh is frequently used for modern sports jerseys and other clothing like hosiery and lingerie
An 18×14 mesh has become standard; 16×16 was formerly common and other common sizes are 18×18 and 20×20. For comparison, a typical screen in a clothes dryer has a nylon 23x23 mesh screen. Fiberglass solar screens provide over 75% of UV protection, by using thicker strands and a closer mesh than regular 18x14 fiberglass window screening ...
Glass fiber, when used as a thermal insulating material, is specially manufactured with a bonding agent to trap many small air cells, resulting in the characteristically air-filled low-density "glass wool" family of products. Glass fiber has roughly comparable mechanical properties to other fibers such as polymers and carbon fiber. Although not ...