hypersensitization वाक्य
उदाहरण वाक्य
मोबाइल
- Some of the earliest gas-phase hypersensitization methods involved exposing the plates to mercury vapor before exposure to light.
- Spectroscopic studies of the planet Venus were carried out by JPL astronomers, hypersensitization of Eastman Kodak IR spectroscopic glass plates.
- This was an extremely fine-grained, high-contrast, extended-red-sensitivity panchromatic film that benefited dramatically from hypersensitization.
- Several hypersensitization or " hypering " techniques have been developed to overcome this failure of the reciprocity law, and what follows refers mainly to work in astronomy.
- Hypersensitization was also used, and can still be used, with other black-and-white materials and with color films, especially the Kodak Ektachrome line.
- Hypersensitization is used particularly in deep-sky astrophotography, which deals with low-intensity incoming light, requires long exposure times, and is thus particularly sensitive to contaminants in the film.
- Hypersensitization with forming gas or hydrogen was widely used by professional astronomers on plates and by amateur astronomers on film up until the wide adoption of CCD astronomical cameras relieved them of the tedium.
- It is used in chambers for gas hypersensitization, a process in which photographic film is heated in forming gas to drive out moisture and oxygen and to increase the base fog of the film.
- Some progress was made in the field of photographic emulsions and in the techniques of forming gas hypersensitization, cryogenic cooling, and light amplification, but starting in the 1970s after the invention of the CCD, photographic plates have given way to electronic imaging in professional observatories.
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