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373 terms

Photonics Dictionary: I

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isodensities
The points on a photographic negative that are of equal density.
isodivs
A graphic depiction of the loci of all points in space relative to a laser transmitter at a specific altitude.
isogyric curves
With respect to the effect of crystals on lightwaves, the family of curves having constant direction of polarization.
isolator
In the context of electronics and optics, an isolator refers to a device that allows the transmission of signals in one direction while attenuating or blocking signals in the opposite direction. The...
isoperibol enclosure
An enclosure for a calorimeter that allows measurement of unusually low quantities of power and energy.
isophote
A curve or surface having equivalent light intensity.
isophotometer
A direct recording photometer that is designed to scan a photographic negative to determine its points of isodensity.
isoplanatic
Free of coma.
isopreference curves
Graphic representation of quantified values of image quality whose points all refer to images that are of a constant subjective quality.
isosorbs
Lines of equal atmospheric attenuation in a laser beam.
isotemperature line -> correlated color temperature
Temperature of the blackbody having chromaticity nearest to that of the test source on a specified chromaticity diagram.
isoth
isothermal
isotope shift
The slight difference in wavelength of an element's given spectral line observed in comparing different isotopes of that element.
isotopically selected laser spectroscopy
A spectroscopic technique in which an excitation band absorbs laser energy resulting in an electronic transition. The isotopic species may then be measured using a time of flight mass spectrometer....
isotropic
That property of a material that determines that velocity of propagation within the material is the same for all directions.
ISTM
International Society of Testing and Materials
IT
interline transfer
ITO
indium tin oxide
ITU
International Telecommunications Union
IU
international unit
IUPAC
International Union of Pure and Applied Chemistry
IVHS
intelligent vehicle highway system
IVPO
inside vapor-phase oxidation

Photonics DictionaryI

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