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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 ...
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 ...
View from the Window at Le Gras 1826 or 1827, believed to be the earliest surviving camera photograph. [1] Original (left) and colorized reoriented enhancement (right).. The history of photography began with the discovery of two critical principles: The first is camera obscura image projection; the second is the discovery that some substances are visibly altered by exposure to light. [2]
1902 – Arthur Korn devises practical telephotography technology (reduction of photographic images to signals that can be transmitted by wire to other locations).Wire-Photos are in wide use in Europe by 1910, and transmitted to other continents by 1922. 1907 – The Autochrome plate is introduced. It becomes the first commercially successful ...
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.
A clipboard is a thin, rigid board with a clip at the top for holding paper in place. A clipboard is typically used to support paper with one hand while writing on it with the other, especially when other writing surfaces are not available. The earliest forms were patented in 1870–1871 and referred to as board clips. [1]
The Chinese invention of paper and woodblock printing, at some point before the first dated book in 594 (the Diamond Sutra) produced the world's first print culture. [13] Hundreds of thousands of books , on subjects ranging from Confucian Classics to science and mathematics , were printed using woodblock printing . [ 14 ]
This sub-section is about paper making; for the writing material first used in ancient Egypt, see papyrus.. Paper: Although it is recorded that the Han dynasty (202 BC – AD 220) court eunuch Cai Lun (50 AD – AD 121) invented the pulp papermaking process and established the use of new materials used in making paper, ancient padding and wrapping paper artifacts dating from the 2nd century BC ...