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im only in 8th grade but in 6th grade i took a Photography class [i went to a college program school thing] and if you expose the films to light [besides the red light] the film gets ruined and when you print it out everything is either mostly all white or mostly all black.
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How were photograms invented?
A photogram is a photographic image made without a camera by placing objects directly onto the surface of a light-sensitive material such as photographic paper and then exposing it to light. In a darkroom, or a darkened room, objects are arranged on top a piece of photographic material, usually photographic paper. When the operator is satisfied with the arrangement, the photographic material is exposed with light, usually by switching on an enlarger or other artificial light source. The material is then processed, washed and dried. The usual result is a negative shadow image that shows variations in tone that depends upon the transparency of the objects used. Areas of the paper that have received no light appear white; those exposed through transparent or semi-transparent objects appear grey.
How is the timer used along side the enlarger in the darkroom?
The timer is used to set the intervals at which the light is exposed to the photographic paper. After the timer is turned on, there is a switch that sets the exposure time. This can be put into milliseconds, seconds, or minutes. Often the photographic paper is exposed for around 15 seconds, though this depends largely on the quality of the negative, style of the photographer, contrast of the print, etc.
What is a photographic print made by placing objects on light sensitive paper and exposing it to light?
A photogram
What element is a silvery white metal used in flare fireworks and photographic light bulbs?
Magnesium is a silvery white metal used in flares fireworks and photographic light bulbs
What are 2 ways in making a photographic print?
1. Contact - in which the negative is sandwiched with the print paper and exposed to light, then the print developed2. enlargement - in which the negative is projected and focused on the paper to be exposed, which is then developed as above.Contact prints are suitable for a "quick look" such as to pick which pictures to "enlarge".You have to do so because most people cannot tell what a picture looks like from its negative.
What happens when silver nitrate exposed to light?
Silver nitrate is photosensitive, meaning it decomposes when exposed to light. This decomposition results in the formation of elemental silver and nitrogen dioxide gas. This reaction can be used to create photographic films and papers.
When photographic film is exposed to light what metal is formed?
silver halide
How do x rays affect photographic plates?
X-rays will "Fog" photographic plates. That means the plates act as if 'exposed' to light. If the X-rays are intense enough, the plates will appear to be totally exposed.
What is silver bromide?
Silver bromide is a chemical compound composed of silver and bromine atoms. It is commonly used in photographic films and papers due to its light sensitivity, allowing it to be exposed to light to create a photographic image. Silver bromide is insoluble in water and has a pale yellow color.
What does STTP do in a photographic film developing formula?
In the processing of photographic films, plates or papers, the photographic developer (or just developer) is a chemical that makes the latent image Latent_imageonthe film or print visible. It does this by reducing the silver halides that have been exposed to light to elemental silver in the gelatin matrix. As a generalisation, the longer a developer is allowed to work, the greater the degree of reduction of the silver halide crystals to silver and therefore the darker the image.
Could you say that the dark image on the photographic film is due to fluorescence's?
no. photographic films contains silver iodide which converts to gray-black metallic silver via photoreduction. photoreduction is a light-dependent reaction which converts solar energy to chemical energy. when UV rays or visible light (basically sun rays) interacts with the silver chloride in the photographic film, photoreduction takes place. try pouring some silver chloride on a piece of white cloth, then leave it out in the sun, the area where the silver chloride is exposed to the sun will become dark coloured
Why should you store silver bromide in brown bottles?
Silver bromide reacts chemically when exposed to light, which is why they use it to make photographic papers.
Describe the ways in which the unprocessed photographic paper can get damaged in transit?
When undeveloped photographic media is exposed to light or radiation (x-rays included), it can be exposed. It can also be damaged by exposure to water or other liquids. Physical damage can also be done by rough transportation, like rips, tears and folds.
What is light sensitive paper and how does it work?
Light sensitive paper is a type of photographic paper that changes color when exposed to light. It contains light-sensitive chemicals that react to light by darkening in areas exposed to light, creating a visible image. This process is used in traditional darkroom photography to create prints from film negatives.
How were photograms invented?
A photogram is a photographic image made without a camera by placing objects directly onto the surface of a light-sensitive material such as photographic paper and then exposing it to light. In a darkroom, or a darkened room, objects are arranged on top a piece of photographic material, usually photographic paper. When the operator is satisfied with the arrangement, the photographic material is exposed with light, usually by switching on an enlarger or other artificial light source. The material is then processed, washed and dried. The usual result is a negative shadow image that shows variations in tone that depends upon the transparency of the objects used. Areas of the paper that have received no light appear white; those exposed through transparent or semi-transparent objects appear grey.
What elements used in films turns black in light negative?
Silver-based film stock turns black in a light negative, as it is developed using a chemical process that exposes the film to light and causes the silver halide crystals to darken where they have been exposed, creating the photographic image.
How were UV waves discovered?
Photographic plates still darkened when exposed for making spectrograms in areas beyond violet where no visible light could be seen.
