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For example silver bromide or chloride.
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What Metal or Alloy that turns black when exposed to light and is used as film Coating?
silver halides
Why can red light be used in a dark room?
Dim red light will not expose black and white photographic film. Color film must be handled in total darkness.
Reasons why film will come out black?
One reason film would come out black is if there was not enough light present at the time you took the photo.
What is a grifone?
Griflon is a Motion Picture film-making term. It is a large reinforced poly-film fabric, used to bounce light or create shade. Most often black on one side and white on the other.
The black form of this nonmetal conducts electricity better when light is shined upon it and it is used in Xerox toner?
Selenium is the nonmetal that conducts electricity in its black form when light shines on it. But selenium is not a component of Xerox toner. Selenium is used in the older photoreceptor drums and belts that serve as the equivalent of film in a camera.
Whatcolor light do you used to develope negatives in a dark room?
If you're developing roll film in light-tight tanks, any sort of light will do during the processing stages. If you're developing sheet film in open trays, no (zero) light can be used. Nor can you use any type of light during the loading of film on to reels that are used in the tanks.
When a x-ray photograph is taken why is it necessary to have the film in a light proof cassette?
Film is light sensitive so any exposure to the film will fog it. Most film comes either in a cassette, as in 35mm or roll-film which is protected by a paper leader and trailer. Professionals also use cut film which is hand loaded in the dark into film holders. Once a film is exposed in the camera it has what is called a latent image. It stays latent until processed. Once all the film is exposed it needs to be processed as soon as possible. Once the film is exposed its sensitivity makes it more susceptible to fogging and therefor must be protected from light. In the case of 35 mm and 120 roll film it shouldn't be much of a problem as the film is protected by the cassette or the backing paper. Once the film is taken out of its protection it has to be in total darkness. Colour film is sensitive to all colours and light. Monochrome film is what is called panchromatic. This means that although the film is mono it still records colours as grey tones so it must be handled in complete darkness. Black and white papers as used for monochrome prints are sensitive to only certain colours of the visible spectrum so can be viewed under dim yellow light. Blue light would fog the paper which is why in a black and white darkroom yellow filters are used for processing paper prints.
What is the name of the compound used to take black and white photos?
actually not silver chloride but silver bromide AgBr is used in black and white photography as a soft, pale yellow, insoluble salt well known (along with other silver halides for its unusual sensitivity to light. This property has allowed silver halides to become the basis of modern photographic materials. AgBr is widely used in black and white photography film The classic black and white film would be made using silver bromide which is made from silver nitrate. Silver nitrate is a chemical compound with chemical formula AgNO3. This nitrate of silver is not the light sensitive ingredient in photographic film .
Shutter speed can be used to?
How many amount of light are reaching in the film.
What do you use fast film for?
"Fast" film registers light more quickly than slow film. Fast film is usually used for low light photography, high speed photography (for sports, etc.) or similar needs.
Why are x rays black and white?
The x-ray image is formed when the x-rays travel through the patient onto the cassette. The x-ray cassette is made with a Gelatin, bariums, and crystals the light up when interacted with x-rays. Depending on how much of the x-ray is absorbed by your body, the cassette will light up in different brightnesses, causing certain parts of the film to become slightly exposed. A fully exposed x-ray film will appear black will appear black when processed, while one the hasn't been exposed in any light will show be very light, and only show the color of the film, which has a slight tint, and a properly used x-ray film will show black, white, and different shades of gray depending on the thickness of bones, and tissue mass.
Why are X-rays black and white?
The x-ray image is formed when the x-rays travel through the patient onto the cassette. The x-ray cassette is made with a gelatin, bariums, and crystals the light up when interacted with x-rays. Depending on how much of the x-ray is absorbed by your body, the cassette will light up in different brightnesses, causing certain parts of the film to become slightly exposed. A fully exposed x-ray film will appear black will appear black when processed, while one the hasn't been exposed in any light will show be very light, and only show the color of the film, which has a slight tint, and a properly used x-ray film will show black, white, and different shades of gray depending on the thickness of bones, and tissue mass.
