cellulose nitrate वाक्य
उदाहरण वाक्य
मोबाइल
- Cellulose acetate, which replaced cellulose nitrate, is fire resistant and not brittle, so it doesn't need a plasticizer.
- Until about 1950, all motion pictures were shot and projected with film stock that used a cellulose nitrate base.
- Prior to cellulose nitrate ( i . e . : guncotton ), which yellowed quickly and was extremely flammable.
- According to the producers the film had a length of around 600 metres, on 35 mm cellulose nitrate film.
- Old film stock was composed of silver cellulose nitrate, a substance that put the " silver " luminousness onto the silver screen.
- The cellulose nitrate in dice can, after many years, begin to crystallize and crack and literally implode, making the most marvelous shapes.
- In the early days of film, when the stock was made of cellulose nitrate, studios sometimes burned old films for special effects.
- "' Photographic emulsion "'is a light-sensitive colloid used in glass, films ( of cellulose nitrate, cellulose acetate or polyester ), paper, or fabric.
- The chemical instability of cellulose nitrate material, unrecognized at the time of its introduction, has since become a major threat for film collections.
- "Cellulose nitrate is easily ignited, burns with intense heat, and emits gases that are poisonous and flammable, " one of the citations said.
- Occasionally the " Hindenburg "'s varnish is incorrectly identified as, or stated being similar to, cellulose nitrate which, like most nitrates, burns very readily.
- A Nitrate Film Preservation Facility on the Communications Research Centre campus in Shirleys Bay, on the outskirts of Ottawa, houses Canada's cellulose nitrate film collection.
- They are usually aluminum-based coated with cellulose nitrate lacquer, a thick black compound similar to that used in automotive paint from the 1920s through the'50s.
- The German chemists Arthur Eichengr�n and Theodore Becker invented the first soluble forms of cellulose acetate in 1903, which was much less flammable than cellulose nitrate.
- In addition to convenience, this served a safety purpose, as the cellulose nitrate thread was highly flammable and a loose accumulation of it combusted violently if ignited.
- In 1993 the UCLA Film and Television Archive started a restoration project on the series after the unstable cellulose nitrate film was found to be suffering from deterioration.
- One of the collections in the greatest danger is the 30, 000 recordings made at the turn of the 20th Century on cylinders coated with a chemical, cellulose nitrate.
- In 1965 a systematic programme began of conversion of film prints on the highly unstable cellulose nitrate base, which remained in commercial use into the 1950s, to security film.
- Agateen No . 27 ( cellulose nitrate ) and Paraloid B-72 are the most commonly used lacquers however there is a debate which lacquer, cellulose nitrate or acrylic, is best.
- Pure cellulose nitrate is brittle, and to make it malleable, chemists had to add a so-called plasticizer _ usually camphor, the same stuff that used to give mothballs their smell.
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