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The paper clip patented by Vaaler in 1899 and 1901 Postage stamp issued in 1999 to commemorate Vaaler's alleged invention of the paper clip. The clip depicted is the common Gem clip, not the one patented by Vaaler. Giant paper clip erected in 1989 in Sandvika, Norway, to honor Vaaler's invention. This 23-foot-tall (7 m) clip is the Gem, not the ...
In ancient times writings and inscriptions were generally made on tablets of bamboo or on pieces of silk called chih. But silk being costly and bamboo heavy, they were not convenient to use. Cai Lun then initiated the idea of making paper from the bark of trees, hemp, old rags, and fishing nets.
By the end of the 19th-century almost all printers in the western world were using wood instead of rags to make paper. [119] Together with the invention of the practical fountain pen and the mass-produced pencil of the same period, and in conjunction with the advent of the steam driven rotary printing press, wood based paper caused a major ...
Before paper was invented, the ancient Chinese carved characters on pottery, animal bones and stones, cast them on bronzes, or wrote them on bamboo or wooden strips and silk fabric. These materials, however, were either too heavy or too expensive for widespread use. The invention and use of paper brought about a revolution in writing materials.
He developed a theory of two types of society, the militant and the industrial, which corresponded to this evolutionary progression. Militant society, structured around relationships of hierarchy and obedience, is simple and undifferentiated; industrial society, based on voluntary, contractually assumed social obligations, is complex and ...
A silhouette of Goethe (1778). Paper-cut art appeared during the Jin dynasty in 4th century AD after the Chinese official Cai Lun invented paper in 105 AD. [1] The oldest surviving paper cutout is a symmetrical circle from the 6th-century Six Dynasties period, found in Xinjiang, China.
The AOL.com video experience serves up the best video content from AOL and around the web, curating informative and entertaining snackable videos.
The extent of the Indus Valley Civilisation. This list of inventions and discoveries of the Indus Valley Civilisation lists the technological and civilisational achievements of the Indus Valley Civilisation, an ancient civilisation which flourished in the Bronze Age around the general region of the Indus River and Ghaggar-Hakra River in what is today Pakistan and northwestern India.