Over the course of October at London Heathrow Airport, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 54 minutes, implying an average daily decrease of 3 minutes, 48 seconds, and weekly decrease of 26 minutes, 35 seconds.
Polyester is a synthetic fiber derived from coal, air, water, and petroleum. Developed in a 20th-century laboratory, polyester fibers are formed from a chemical reaction between an acid and alcohol.
Synthetic fabrics are textiles made from man-made rather than natural fibers. Some examples of synthetic fabrics are polyester, acrylic, nylon, rayon, acetate, spandex, lastex and kevlar.Synthetic fibres are made by the joining of monomers into polymers, by the process of polymerization.A synthetic fibre, when magnified, looks like plastic spun together. The fabric is made from chemically produced fibers.The chemicals used to make the fibers are sodium hydroxide and carbon disulphide which are derived from coal, oil, or natural gas.The chemicals are in liquid form and are forced through tiny holes called spinnerets.he fabric is made from chemically produced fibers. The chemicals used to make the fibers are sodium hydroxide and carbon disulphide which are derived from coal, oil, or natural gas. The chemicals are in liquid form and are forced through tiny holes called spinnerets.