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photometry

Definitions

  • WordNet 3.6
    • n photometry measurement of the properties of light (especially luminous intensity)
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Webster's Revised Unabridged Dictionary
    • n Photometry That branch of science which treats of the measurement of the intensity of light.
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Century Dictionary and Cyclopedia
    • n photometry The measurement of the relative amounts of light emitted by different sources. This is usually accomplished by determining the relative distances at which two sources of light produce equal intensities of illumination. See photometer.
    • n photometry Measurement of the amount of insufficiency of the external muscles of the eye; the scientific use of the phorometer.
    • n photometry In biology, the reactional movement, positive and negative, with an indifference point between, of organisms under changing intensity of illumination.
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Chambers's Twentieth Century Dictionary
    • n Photometry the measurement of the intensity of light
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Etymology

Webster's Revised Unabridged Dictionary
Cf. F. photométrie,
Chambers's Twentieth Century Dictionary
Gr. phōs, phōtos, light, mētron, a measure.

Usage

In literature:

Photographic photometry has meanwhile risen to an importance if anything exceeding that of visual photometry.
"A Popular History of Astronomy During the Nineteenth Century" by Agnes M. (Agnes Mary) Clerke
Its precedence over its rivals Vega and Capella, long in dispute, has been settled by the Harvard photometry.
"Pleasures of the telescope" by Garrett Serviss
Abderrahman Sufi improves the photometry of the stars, ii.
"History of the Intellectual Development of Europe, Volume II (of 2)" by John William Draper
This point became strikingly evident during the progress of work in aerial photometry.
"Visual Illusions" by Matthew Luckiesh
Photographic photometry of the asteroids has revealed marked variations in their light, due perhaps to irregularities of figure.
"Astronomy" by David Todd
The measurement of the illumination is termed photometry (q.v.).
"Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 3" by Various
Photometry, law of intensity, candle power, foot-candle.
"Physics" by Willis Eugene Tower
An important matter in connexion with glow lamps is their photometry.
"Encyclopaedia Britannica, 11th Edition, Volume 16, Slice 6" by Various
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In science:

The imaging observations and photometry, QSO candidate selection and verification, and QSO absorption spectroscopy, are presented in § 2, § 3, and § 4 respectively.
QSOs and Absorption Line Systems Surrounding the Hubble Deep Field
In this paper we present red spectroscopy and photometry of IP Peg.
A TiO study of the dwarf nova IP Pegasi
The lightcurves obtained from the photometry (dots) and spectroscopy (bars).
A TiO study of the dwarf nova IP Pegasi
All photometry in Table 2 is for the standard ASCA grade set.
The Chandra Deep Survey of the Hubble Deep Field North Area. IV. An Ultradeep Image of the HDF-N
In Table 3 we summarize the photometry for those stars around N83B-1 (the PC field of view) which are brighter than 19th magnitude in the Str¨omgren y filter, as we cannot provide accurate colors for the fainter ones.
HST study of the LMC compact star forming region N83B
The photometry of the stellar subsample is presented in Table 3.
HST study of the LMC compact star forming region N83B
In this section we describe a detailed investigation into the accuracy of 450µm photometry with SCUBA.
The SCUBA Local Universe Galaxy Survey II. 450 micron data - evidence for cold dust in bright IRAS Galaxies
Relatively few of the SBF survey galaxies with SMAC spectroscopic parameters also have SMAC surface photometry.
A Synthesis of Data from Fundamental Plane and Surface Brightness Fluctuation Surveys
We fitted the V and I SBF surface photometry down to fixed fractions of the sky brightness, 2.0% in V and 0.4% in I .
A Synthesis of Data from Fundamental Plane and Surface Brightness Fluctuation Surveys
Table 1 presents the results of our fits to the SBF survey photometry.
A Synthesis of Data from Fundamental Plane and Surface Brightness Fluctuation Surveys
Figure 8 shows the comparison between the R-band XFP values determined from the V and I SBF photometry.
A Synthesis of Data from Fundamental Plane and Surface Brightness Fluctuation Surveys
Figures 9 and 10 compare XFP from the I and V SBF surface photometry fits of the previous section to XFP from the SMAC survey.
A Synthesis of Data from Fundamental Plane and Surface Brightness Fluctuation Surveys
This could be due to stellar population effects, as the 7S photometry comes from the B -band, while the SBF photometry is in V and I, and both have been transformed to R.
A Synthesis of Data from Fundamental Plane and Surface Brightness Fluctuation Surveys
This is a ma jor improvement to the aperture photometries of PNe done so far.
Planetary nebula or symbiotic Mira? Near infrared colours mark the difference
In absence of such data we relied upon uvbyβ or 13-colour photometry calibrations or their spectral types.
A revised calibration of the Mv-W(OI 7774) relationship using Hipparcos data: Its application to Cepheids and evolved stars
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