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8 terms
Photonics Dictionary: R
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photographic x
R x
radiation-monitoring film
The film used in photographic dosimetry to record the types and amounts of ionizing radiation, such as x-rays and gamma rays, present in an area for a set interval of time. The negative produced by...
radioautograph
The photographic image of a thin specimen having a radioactive isotope that, formed through contact between the specimen and a photographic plate, displays the distribution of the radioactive...
radiography
A photographic process using x-ray radiation or the g-rays of radioactive materials.
radiophotography
The transmission of photographic images or pictures by radio waves.
rapid access system
A photographic camera and processing system used to form a usable record of the subject in a short time, usually a few seconds, for immediate analysis.
reflected ultraviolet photography
A photographic method used to obtain an image of a subject by means of its reflectance of incident ultraviolet radiation. An ultraviolet source is used to irradiate the subject, while the reflected...
reticulation
The formation of a distinct, irregular surface pattern on a photographic emulsion due to differential swelling of the gelatin.
retina camera
A special-purpose camera used by ophthalmologists to photograph the retina of the eye. The optical system operates through the eye pupil, and the illuminant must be able to send light into the eye...
Photonics Dictionary
R
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