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.
Cationic-dyeable polyester fibre is a special polyester fibre that can be coloured with cationic dye, unlike ordinary polyester fibres. Excellent colour development and fastness have enabled cationic-dyeable polyester fibres to be used in many applications.ationic-dyeable polyester fibre is a special polyester fibre that can be coloured with cationic dye, unlike ordinary polyester fibres. Excellent colour development and fastness have enabled cationic-dyeable polyester fibres to be used in many applications.