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.
The common thing between polyamide and polyester is both are synthetic fibers fall under class man made fibers. Nylon is commonly known as polyamide. Developed by Dupoint.Polyamide (nylon) is first engineering thermoplastic.oth polyester and polyamides have similar properties. Neither is  necessarily stronger than the other; however, the polyester does  perform better than the polyamide in cer â¦ tain applications. The most  common polyamide is nylon, but silk and wool are also polyamides.