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Ripstop fabric. Ripstop is a woven fabric, often made of nylon, using a reinforcing technique that makes it more resistant to tearing and wear. During weaving, stronger (and often thicker) reinforcement yarns are interwoven at regular intervals in a crosshatch pattern. The intervals are typically 5 to 8 millimeters (0.2 to 0.3 in).
A diffusion tube consists of a small, hollow, usually transparent, acrylic or polypropylene plastic tube, roughly 70mm long, with a cap at each end. One of the caps (coloured white) is either completely removed to activate the tube (in the case of nitrogen dioxide sampling) or contains a filter allowing in just the gas being studied.
In chemical engineering, a Stefan tube is a device that was devised by Josef Stefan in 1874. [1] It is often used for measuring diffusion coefficients . [ 1 ] [ 2 ] It comprises a vertical tube, over the top of which a gas flows and at the bottom of which is a pool of volatile liquid that is maintained in a constant-temperature bath.
Modern air pollution measurement is largely automated and carried out using many different devices and techniques. These range from simple absorbent test tubes known as diffusion tubes through to highly sophisticated chemical and physical sensors that give almost real-time pollution measurements, which are used to generate air quality indexes.
Kites are now mostly used for recreation. Lightweight synthetic materials (ripstop nylon, plastic film, carbon fiber tube and rod) are used for kite making. Synthetic rope and cord (nylon, polyethylene, kevlar and dyneema) are used as bridle and kite line.
Silnylon, a portmanteau of "silicone" and "nylon", is a synthetic fabric used mainly in lightweight outdoor gear. It is made by impregnating a thin woven nylon fabric with liquid silicone from both sides. [1] This makes it strong for its weight, as the silicone substantially improves the tear strength.
Parachute pants are a style of trousers characterized by the use of ripstop nylon or extremely baggy cuts. In the original tight-fitting, extraneously zippered style of the late 1970s and early 1980s, "parachute" referred to the pants' synthetic nylon material. In the later 1980s, "parachute" may have referred to the extreme bagginess of the pant.
The original specification for ballistic nylon was an 18 oz (510 g) nylon fabric made from 1050 denier high tenacity nylon yarn in a 2×2 basketweave. Today it may be any nylon fabric made with a "ballistic weave", typically a 2×2 or 2×3 basketweave. It can be woven from nylon yarns of various denier such as 840 denier and 1680 denier.