In 1851, Frederick Scott Archer invented the wet collodion process as a replacement for albumen in early photographic emulsions, binding light-sensitive silver halides to a glass plate. Nitrocellulose is widely used as support in diagnostic tests where antigen-antibody binding occurs; e.g., pregnancy tests, U-albumin tests, what is billiards and CRP tests. In terms of lacquers and coatings, nitrocellulose dissolves readily in organic solvents, which upon evaporation leave a colorless, transparent, flexible film. Most lacquers are prepared from the dinitrate, whereas explosives are mainly the trinitrate. Nitrocellulose lacquers have been used as a finish on furniture and musical instruments. Nitrocellulose film base manufactured by Kodak can be identified by the presence of the word "nitrate" in dark letters along one edge; the word only in clear letters on a dark background indicates derivation from a nitrate base original negative or projection print, but the film in hand itself may be a later print or copy negative, made on safety film.

Can You Put a Pool Table on Carpet? Snooker is played on a large table (full, pro tournament size is 12 × 6 ft). Green and blue are by far the most popular felt colors used today - specifically, Tournament Green (aka Classic Green) and Tournament Blue (aka Electric Blue). Further up the table is the pink ball, which sits midway between the blue spot and the top cushion, followed by the red balls (one each), placed in a tightly-packed triangle behind the pink. If there is no available spot, it is placed as close to its own spot as possible in a direct line between that spot and the top (black end) cushion, without touching another ball. If the starting position spot for a coloured ball is covered by another ball, the ball is placed on the highest available spot. The general rules of pool apply to eight-ball, such as the requirements that the cue ball not be pocketed and that a cushion be hit by any of the balls after the cue ball has struck an object ball. If the cue ball is pocketed at the head of the table, the shot is taken from behind the head string.

Unless the cue ball passes the head string before that touch, the shot is a foul when the cue ball is in hand behind the head string, and the first ball it contacts is also behind the head string. Nitrocellulose (also known as cellulose nitrate, flash paper, flash cotton, guncotton, pyroxylin and flash string, depending on form) is a highly flammable compound formed by nitrating cellulose through exposure to a mixture of nitric acid and sulfuric acid. In precise chemical terms, nitrocellulose is not a nitro compound, but a nitrate ester. The use of nitrate film and the looming threat of its fiery potential were certainly not issues limited to the realm of motion pictures or to commercial still photography. The explosive applications are diverse and nitrate content is typically higher for propellant applications than for coatings. In 1832 Henri Braconnot discovered that nitric acid, when combined with starch or wood fibers, would produce a lightweight combustible explosive material, which he named xyloïdine.

Collodion, a solution of nitrocellulose, is used today in topical skin applications, such as liquid skin and in the application of salicylic acid, the active ingredient in Compound W wart remover. The solution was named collodion and was soon used as a dressing for wounds. In the form of collodion it was also a critical component in an early photographic emulsion, the use of which revolutionized photography in the 1860s. In the 20th century it was adapted to automobile lacquer and adhesives. Radon tests for alpha track etches use nitrocellulose. Meanwhile, many amateur leagues - such as the American Poolplayers Association (APA) and its affiliate the Canadian Poolplayers Association (CPA), the Valley National Eight-ball Association (VNEA) and the BCA Pool League (BCAPL) - use their own rulesets which have slight differences from WPA rules and from each other. Learn the key differences between break cues and playing cues to enhance your game. Pool uses a rack that arranges the balls in a triangular shape when the game starts. One of its first major uses was as guncotton, a replacement for gunpowder as propellant in firearms. The process uses a mixture of nitric acid and sulfuric acid to convert cellulose into nitrocellulose.