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10 terms
Photonics Dictionary: V
Clear All Filters x
range x
V x
visual range
The value of the expanse of b-particles in an absorber, evaluated by visual examination of breaks in the absorption curve.
valence band
In a crystalline substance, the spectral range of states of energy that contains the crystal's binding valence electrons.
VAR
visual aural range
videodisc
A disc whose surface contains recorded digital data at high-packing densities arranged in concentric rings. The data, representing video frames, are both recorded and read by a laser beam.
videography
Videography refers to the process of capturing moving images and recording them in a digital format. It involves the use of video cameras, lighting equipment, and audio recording devices to create...
virtual base
The product of the actual base or baseline of a rangefinder or heightfinder, and the power or magnification of the instrument.
visibility meter
1. An instrument used to determine the visual range in an environment. 2. A type of photometer that artificially reduces an object's visibility to threshold limits and records the quantity of...
visual test chart
A series of high contrast block letters or similar objects arranged to permit the evaluation of eyesight in humans.
void
A blank area (caused by insufficient inking of the paper) that falls within the range of an intended character stroke in an optical character-recognition system.
VRR
visual radio range
Photonics Dictionary
V
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