Ceramics, also known as matte felt ceramics, are made from raw materials containing plant fibers through pulping, modulation, copying, processing and other processes, White Zirconia Ceramic and can be used for painting, printing books and newspapers, packaging, etc. Different from jingdi, jingdi is animal fiber "silk". A sheet that can be folded arbitrarily for writing. Paper is the carrier of writing and printing, and can also be used for packaging, hygiene and other purposes, such as printing paper, carbon paper, toilet paper, facial paper, etc. Due to the invention and promotion of paper, humans can no longer use mud, stone, and wood. , pottery, metal and other materials to record text or pictures, but also to spread and preserve a large amount of ancient information.
Paper: The general term for paper. Paper is White Zirconia Ceramic measured in sheets, so paper is generally divided into: letterpress printing paper, newsprint, offset printing paper, coated paper, book cover paper, dictionary paper, copy paper, cardboard, rice paper, straw paper, etc. Phonetic, the word is from , from Shi, Shi is also sound. "Shi" means "base", "fundamental plane" and "receiving plane". "Ito" means "plant fiber". The combination of and "shi" means "plant fibers (slurry) are spread evenly on a flat bottom plate". Original meaning: a hardened layer of fiber slurry formed by spreading and flattening on a flat floor. Reference: "Shuowen": "Paper, Xu Yiyi. From , Shi's sound. And the shape is close to the word, silk is also, from, Di sound, (all Xi cut)". Among the four treasures of the study, paper came out later than pen, ink, and inkstone. Ancient and modern Chinese and foreign, it is recognized that Cai Lun, an eunuch in the early Eastern Han Dynasty, was the inventor of papermaking.
According to Fan Ye's "Book of the Later Han Dynasty": "Cai Lun, courtesy name Jingzhong, is a native of Guiyang. ... Since ancient times, many books have been compiled with bamboo slips, and those who use silk and silk are called 'paper'. It's not convenient for people. Lun is an idea, using tree skin, hemp head, cloth, and fishing net as paper. In the first year of Yuanxing, it was recorded. The emperor was good at his ability, and naturally he could not use it, so the world is called Caihou. Paper." This is the earliest record of papermaking in historical documents. From the records, we can see that the raw materials used in Cai Lun's papermaking are White Zirconia Ceramic low-cost materials such as bark, hemp, old cloth, and fishing nets. However, there are some examples of the use of paper before Cai Lun is recorded in some documents. For example, in Ban Gu's "Han Shu Biography of Foreign Relatives Xiaocheng Empress Zhao", the case of wrapping medicine with paper in the 2nd century BC was recorded, as well as the "Three Fu Old Stories" written by Zhang Shu in the Qing Dynasty. In particular, the Western Han paper unearthed since this century at Fangmatan in Tianshui, Gansu, the Fengsui Site in Maquanwan in Dunhuang, and the Hanxuanquan Post Site in Tianshuijing in Dunhuang proves that the Western Han Dynasty appeared long before Cai Lun invented papermaking. the use of paper. This is about 170 years ahead of Cai Lun's invention of papermaking.
Who Invented Precision Ceramics?
2022 01/24