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photometry Dictionary Terms

flame emission spectroscopy
A technique in photometry that uses an oxyhydrogen or oxyacetylene flame to optically excite a solution containing the...
optical filter
An optical filter is a device that selectively transmits or blocks specific wavelengths, or colors, of light. Optical...
fiber photometry
An optical recording technique that uses light source(s), a beamsplitting cube, light detector(s) and an optical fiber...
photometry
Photometry is the branch of science that deals with the measurement of light, particularly in terms of its intensity and the...
comparison lamp
A reference incandescent light source having a luminous intensity that is used in photometry for comparison of other light...
flicker photometry
Heterochromatic photometry that depends on the elimination of chromatic flicker at a lower frequency than luminance flicker.
telephotometry
The principles and techniques involved in the use of telephotometers to measure atmospheric extinction.
heterochromatic photometry
Light measurement by comparison of the luminances of unlike chromaticities.
differential spectrophotometry
The measurement of the spectrum bands formed by a spectroscopic sample, based on the differences between the sample and the...
photoemissive tube photometer
A photometer that uses a photoemissive tube to detect and measure light. See photoelectric photometry.
Hubner rhomb
A glass rhomb that is used in photometry to compare two illuminated surfaces. This is accomplished by the rhomb's angles,...
microphotometry
The measurement of the intensity of spectral lines by the examination of a very small area under a microscope and the...
dual-wavelength spectrophotometry
Spectrophotometry in which radiation of two separate wavelengths, usually one in an absorption band and the other not, pass...
flame spectrophotometry
The study of the reflection or transmission properties of specimens as a function of wavelength after they have been excited...
stellar photometry
The utilization of photometric measurement to determine the relative magnitudes of the heavenly bodies.
photographic photometry
A form of photometric measurement, often used with light sources that are transparent or fluctuating, in which a...
silicon photodiode
A silicon photodiode is a semiconductor device that converts light into an electrical current. It is a type of photodetector...
spectrophotometry
Study of the reflection or transmission properties of specimens as a function of wavelength.
flame photometry
A part of the spectrochemical analysis of a sample that deals with the excitation of that sample by flame analysis.
microphotometer
An instrument capable of measuring the transmitted or reflected luminance from a very small area seen under a microscope....
ultraviolet densitometry
A technique, involving spectrophotometry in the ultraviolet, that is designed to determine the colors of thin-layer...
photoelectric photometry
The use of photoelectric sensors to detect and measure the intensity of a light source. This application, as compared to...

(22 results found)

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