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equidensities
1. A contour map of a photographic deposit consisting of lines and curves that join points of equal density. 2. The...
triad
In a color cathode-ray tube, a grouping of three color dots (red, blue and green) that represent one pixel in the final...
calcium indicator
A calcium indicator is a molecule that is sensitive to changes in calcium ion (Ca2+) concentrations in biological systems....
cadmium lamp
A mercury vapor discharge lamp that has cadmium added to emit radiation in the red region as a complement to the mercury...
rhodamine
Rhodamine refers to a family of fluorescent organic dyes that are widely used in various fields, including biology,...
solid-state lamp
An electroluminescent semiconductor that emits low intensity radiation in the green or red regions. Used as an indicator...
multispectral imaging
Multispectral imaging is a technique that involves capturing and analyzing images at multiple discrete spectral bands within...
gallium nitride
Gallium nitride (GaN) is a compound made up of gallium (Ga) and nitrogen (N). It is a wide-bandgap semiconductor material...
green disc
Familiar term for CD/I disc. The CD/I standard also is known as the green standard.
three-filter densities
Integral densities that are measured relative to arbitrarily selected red, green and blue filters.
subtractive colors
Cyan, magenta and yellow. They are called subtractive because they each subtract one color by absorbtion and reflect the two...
light-emitting diode
An LED, or light emitting diode, is a semiconductor device that emits light when an electric current passes through it. LEDs...
beamsplitter
A beamsplitter is an optical device for dividing a beam into two or more separate beams. A simple beamsplitter may be a very...
lenticular color photography
A type of additive color photography using a lenticular structure impressed on a film base and a camera lens with a filter...
III-V material
In semiconductor physics and materials science, the term "III-V materials" refers to compounds composed of elements from...
coumarin 314T
An efficient, readily soluble blue-green laser dye.
fluorophore
A fluorophore is a molecule or a portion of a molecule that has the ability to emit light upon excitation by an external...
GaN-based LEDs
Gallium nitride-based light-emitting diodes (GaN-based LEDs) are semiconductor devices that emit light when an electric...
separation filters
Three filters used in making a color print of a color negative, red, green and blue-violet, respectively. Each filter...
trichromacy
The basis of color vision in the human eye. Three types of cones have been identified, each having a unique spectral...
electroluminescent display
The utilization of the light produced when electrical energy is directly converted into light within devices used for visual...
red, green, blue
RGB stands for red, green, blue, which are the primary colors of light used in additive color mixing. The RGB color model is...
color facsimile transmission
The transmission of a color photograph by separating the colors into varying intensities of red, blue and green, and then...
luminescent greenhouse collector
A collector for photovoltaic power generation that consists of a thin plate that strongly absorbs sunlight striking its...
interferometer
An instrument that employs the interference of lightwaves to measure the accuracy of optical surfaces; it can measure a...
color perception test equipment
Equipment for testing an observer's color vision. Some tests require the identification or ordering of colored samples. The...
Greenough microscope
A form of a stereoscopic microscope having paired objectives, prisms and eyepieces, and invented by H. Greenough.
quantum dot light-emitting diode
Quantum dot light-emitting diode (QLED) is a display technology that utilizes quantum dots, which are semiconductor...
green block
A porous ceramic substance that is ground to a given optical form and on which a polished plate of glass is sagged by heat...
dichroic mirror
A dichroic mirror, also known as a dichroic beamsplitter or interference filter beamsplitter, is an optical device that...
fluorescent protein
Fluorescent proteins are proteins that exhibit the property of fluorescence, which is the ability to absorb light at a...
orthochromatic film
Black and white film that is sensitive to green, blue and violet light but not to red light.
trinoscope
A color-television viewing system with three kinescopes, three lenses and three deflection yokes used to form the red, green...
Twyman-Green interferometer
A testing device that provides a contour map of the emergent wavefront for the observer in terms of the given wavelength of...
shadow mask tube
A type of color-generating cathode-ray tube that uses a shadow mask, a thin perforated electrode, located close to the...
mercury vapor light source
A lamp that has mercury in a tube or bulb that has first been evacuated. The electricity travels through the vapor between...
secondary color
An aberration that remains after primary color is corrected. Primary color causes the back focus of a lens to vary with...
pixel
A pixel, short for "picture element," is the smallest controllable element of a digital image or display. It is a...
flow chemistry
Flow chemistry, also known as continuous-flow chemistry, is a chemical manufacturing process where reactions take place in a...
optical coherence tomography angiography
Also known as OCT-A, optical coherence tomography angiography is an imaging technique that uses light waves to measure...
apochromat
An apochromat, often referred to as an apochromatic lens or apochromatic objective, is a type of optical system designed to...
flame spectroscopy
The study of flames by means of a laser emitting blue light and a spectrometer to measure the green fluorescence created by...
solar radiation
Radiation from the sun that is made up of a very wide range of wavelengths, from the long infrared to the short ultraviolet...
fluorescein
Fluorescein is a synthetic organic compound extensively used as a fluorescent tracer in various applications, particularly...
Fizeau interferometer
A type of interferometer noted for producing narrow multiple-beam interference fringes. As a result, when compared with the...
primary colors
A set of three colored lights which, when mixed, give the sensation of white light. The set used in color television, for...
receiver primaries
Also known as display primaries. Colors formed by a television receiver that are of constant chromaticity and variable...
hyperspectral imaging
Hyperspectral imaging is an advanced imaging technique that captures and processes information from across the...
remote sensing
Remote sensing is a method of data collection and observation where information about objects, areas, or phenomena on...
color-defective vision
Situation in which the observer requires fewer than three independent stimuli to make color matches. Dichromats require only...
matrix
With respect to television, that part of a color television circuit that combines the I, Q and Y signals, and changes them...
color photographic film
Film that produces color negatives or transparencies by the use of three emulsions, one coated over the other, that are each...
photovoltaic
Photovoltaic (PV) refers to a technology that converts sunlight directly into electricity using semiconductors. The term...
dispersion
Dispersion refers to the phenomenon where different wavelengths (colors) of light travel at different speeds when passing...
auroral line
The green line, in the spectrum of the aurora borealis, that has a wavelength of 5577 Å; it is caused by a forbidden...
hyperspectral imaging camera
A hyperspectral imaging camera is a sophisticated imaging device capable of capturing and processing data across a wide...

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