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Dry ice blasting used for cleaning a rubber mold Dry ice blasting used for cleaning electrical installations. Dry ice can be used for loosening asphalt floor tiles or car sound deadening material, making them easy to prise off, [30] as well as freezing water in valveless pipes to enable repair. [31]
Fibers invented between 1930 and 1970 include nylon, PTFE, polyester, Spandex, and Kevlar. Clothing producers soon adopted synthetic fibers, often using blends of different fibers for optimized properties. [100] Synthetic fibers can be knit and woven similarly to natural fibers. Synthetic fibers are made by humans through chemical synthesis as ...
In the early 1930s, new forms of summer evening clothes were introduced as appropriate for the popular seaside resorts. The waist-length white mess jacket, worn with a cummerbund rather than a waistcoat, was modeled after formal clothing of British officers in tropical climates. This was followed by a white dinner jacket, single or double-breasted.
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Clothing maintains a thermal balance; it keeps the skin dry and cool. It helps to keep the body from overheating while avoiding heat from the environment. [22] [23] Moisture comfort Moisture comfort is the prevention of a damp sensation. According to Hollies' research, it feels uncomfortable when more than "50% to 65% of the body is wet."
An ice cube tray is a tray divided into compartments. It is designed to be filled with water, then placed in a freezer until the water freezes to ice, producing ice cubes. The first flexible ice cube tray was invented by Lloyd Groff Copeman in 1928. [219] 1928 Bubble gum. Bubblegum is a type of chewing gum especially designed for blowing bubbles.
Araucanos and Huasos in Chile, 19th century. A market scene Ruana in Bogotá, circa 1860. A Peruvian chalán dancing marinera on a Peruvian Paso horse.. A poncho (Spanish pronunciation:; Quechua: punchu; Mapudungun: pontro; "blanket", "woolen fabric") [1] [2] [3] is a kind of plainly formed, loose outer garment originating in the Americas, traditionally and still usually made of fabric, and ...
c. 50,000 BC – A discovered twisted fibre (a 3-ply cord fragment) indicates the likely use of clothing, bags, nets and similar technology by Neanderthals in southeastern France. [1] [2] c. 27000 BC – Impressions of textiles and basketry and nets left on small pieces of hard clay in Europe. [3] c. 25000 BC – Venus figurines depicted with ...