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.
1 Polyester is a synthetic fabric that is used in a satin weave that is more affordable. 2  This fabric does not breathe as well as silk. 3  Acetate is another synthetic fabric that is used, but the quality might be compromised. 4  Silk is the natural and most expensive fabric used in a satin weave.