In 1845, Cybertron, a chemist living in the northwestern city of Basel, Switzerland at home doing the experiments, accidentally met with concentrated sulfuric acid and concentrated nitric acid on the table, he quickly picked up his wife's mixed acid cloth apron to wipe the table. After a hectic, he put the apron to hearth baked, but aprons "poof" a burned up, fall into ashes. Cybertron with the "significant discovery" returned to the lab and repeating "incident". After numerous experiments, Cybertron has finally found the cause: the original cloth apron is cellulose, the main ingredient, which contact with concentrated nitric acid and concentrated sulphuric acid mixture, producing the cellulose nitrate resin, which was later widely used nitrocellulose. Plasticity of the Cybertron found nitrocellulose, and used it to make the impervious. He was interesting, it might make some beautiful rice bowls, cups, bottles and teapots. He admired his masterpiece, especially famous scientist Michael Faraday wrote to his friend the windfall. But Faraday does not care, until the emergence of a photographer.
Photographer yalishanda·pakesi has many hobbies, photography is one of them. In 19th century, people won't be able to buy like today's photographic film and chemicals, what must often make their own needs. Each photographer must also be a chemist.
Photography is one of the materials used in "the sponge", it is a kind of "nitrocotton" solution, that is, in alcohol and ether of cellulose nitrate. At that time it was used for the photosensitive chemicals stick on the glass, to make similar to today's equivalent of photographic film.
In the 1850 of the 19th century, the parks to view different ways to handle cotton. One day, he tried to glue cotton mixed with camphor. To his surprise is that blend to produce a hard material that can be bent. Parks said the substance in question is "pakexin", that is one of the earliest plastics.