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Kinematics    
n. 运动学

运动学

kinematics
n 1: the branch of mechanics concerned with motion without
reference to force or mass


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  • Learn About the History of Polyester - ThoughtCo
    Polyester was first developed in a lab with a chemical reaction between an acid and alcohol British chemists patented polyethylene terephthalate, or PET, in 1941, marking a key invention in polyester Polyester is used to make fibers, films, and plastics, and is strong and versatile
  • Polyester Fabric: Characteristics, Uses, History - ATHM
    Polyester fabric is a synthetic fabric made from polymer Polyester was first invented in 1941 by British scientists The scientists made the first polyester fabric from coal, water, and air It is an artificial fabric, meaning it does not occur naturally
  • Polyester - Wikipedia
    Polyester is a category of polymers that contain one or two ester linkages in every repeat unit of their main chain [1] As a specific material , it most commonly refers to a type called polyethylene terephthalate (PET)
  • History of Polyester Fabrics – Lawrence Hunt
    Although it wasn’t prevalent until the 1960s, polyester’s history is quite an extensive one Early Beginnings Polyester fabrics got their beginnings back in the mid-1930s when a man by the name of W H Carothers, a DuPont employee at the time, discovered that he could create fibers by mixing carboxyl acids and alcohols
  • The History of Polyester Fabric - Our Everyday Life
    A group of scientists from England took over the polyester project and in 1941 came up with Terylene, the first polyester fabric DuPont bought out all polyester rights in 1946 and developed their version, called Dacron The American public was first exposed to polyester in 1951
  • History of Polyester: Invention to Modern Use
    Those 1960s and ’70s were critical years for polyester in fashion history In this time, polyester was also the stuff of cheap and informal wear Polyester suits were the image of the working-class man in the United States and a fashionably inexpensive alternative to wool suits
  • The Evolution of Polyester — Scientifically Better
    Polyester is a polymer invented in the 1950s, and much like other inventions, it has evolved and improved significantly over the past seven decades The once slick and stiff fabric has evolved into a high-performance, premium material with a much lower ecological footprint due to innovations in fiber shape, sizing, and spinning
  • The Complete History Of Polyester - Quality Nylon Rope
    Polyester was developed in the 20th century by a number of American and British scientists Here’s a timeline of how they did it 1926: American scientist Wallace Carothers first discovered that alcohols and carboxyl acids could be mixed to create synthetic fibers Unfortunately, his work on polyester was temporarily shelved to focus on nylon
  • What Is Polyester Fabric? History, How Where Is Made
    First introduced in the mid-20th century, polyester revolutionized the textile industry with its synthetic composition, offering a resilient alternative to natural fibers like cotton and silk
  • The History of Polyester - The Inventors
    British chemists, John Rex Whinfield and James Tennant Dickson, employees of the Calico Printer's Association of Manchester, patented "polyethylene terephthalate" (also called PET or PETE) in 1941, after advancing the early research of Wallace Carothers





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