• 목록
• 답변
• 글쓰기
• 게시판 리스트 옵션
  • 수정
  • 삭제

A special projector certified to run nitrate films has many modifications, among them the chambering of the feed and takeup reels in thick metal covers with small slits to allow the film to run through them. Projection rooms may also be required to have automatic metal covers for the projection windows, preventing the spread of fire to the auditorium. Later that same month, many more reels and film cans of negatives and prints also burned at Edison Studios in New York City, in the Bronx; then again, on May 13, a fire at Universal Pictures' Colonial Hall "film factory" in Manhattan consumed another extensive collection. Yet again, on June 13 in Philadelphia, a fire and a series of explosions ignited inside the 186-square-meter (2,000-square-foot) film vault of the Lubin Manufacturing Company and quickly wiped out virtually all of that studio's pre-1914 catalogue. Many films produced during the early 20th century were lost through this accelerating, self-catalyzed disintegration or through studio warehouse fires, and many others were deliberately destroyed specifically to avoid the fire risk. For this reason, immersing burning film in water may not extinguish it, and could actually increase the amount of smoke produced.

Nitrate dominated the market for professional-use 35 mm motion picture film from the industry's origins to the early 1950s. While cellulose acetate-based safety film, notably cellulose diacetate and cellulose acetate propionate, was produced in the gauge for small-scale use in niche applications (such as printing advertisements and other short films to enable them to be sent through the mails without the need for fire safety precautions), the early generations of safety film base had two major disadvantages relative to nitrate: it was much more expensive to manufacture, and considerably less durable in repeated projection. Cellulose triacetate superseded nitrate as the film industry's mainstay base very quickly. 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.

Most automobile "touch up" paints are still made from lacquer because of its fast drying, easy application, and superior adhesion properties - regardless of the material used for the original finish. This allowed rayon to become a popular raw material in textiles. Nathan Rosenstein invented the "spunize process" by which he turned rayon from a hard fiber to a fabric. Frank Hastings Griffin invented the double-godet, a special stretch-spinning process that changed artificial silk to rayon, rendering it usable in many industrial products such as tire cords and clothing. Nitrocellulose was used as the first flexible film base, beginning with Eastman Kodak products in August 1889. Camphor is used as a plasticizer for nitrocellulose film, often called nitrate film. John Wesley Hyatt created the winning replacement, which he created with a new material he invented, called camphored nitrocellulose-the first thermoplastic, better known as celluloid. The object of the game is to reach a certain number of points, typically seven, earned by being the first to run a hoop.

Keep in mind that the direction change transferred to an object ball is very small- usually 5 percent or less. They are numbered 1-15. Numbers 1-8 are solid colored balls, meaning the whole ball is one color except for the where it is numbered. However, every player is different, so the worst felt color for some may be the best for others. However, Gibson still use nitrocellulose lacquers on all of their guitars, as well as Fender when reproducing historically accurate guitars. However, ultrasonic splicing in the frame line area can be invisible. If you want to hit a ball that’s slightly behind another ball, you can master "swerve" (which we discuss below) to develop this highly important skill. That’s it. Of course, to get there can take a long time. And while there are lots of different types of billiard games that you can learn and play, pool is by far the most popular, at least in America. Becoming skilled at 8 pool requires practice, strategy, and knowledge of essential shots. Those that actually do know tend to hold this knowledge closely; and would not share, even under torture.

Here's more information in regards to what is billiards look at our web site.