In the modern usage, it is a device that from a distance determines the temperature of a surface from the spectrum of the thermal radiation it emits, a process known as pyrometry and sometimes radiometry.
32.
The analysis of combined thermal radiometry of from measurements by the " Spitzer Space Telescope " and " Herschel Space Telescope " indicates an effective diameter of and albedo of 0.107.
33.
Light is measured with two main alternative sets of units : radiometry consists of measurements of light power at all wavelengths, while photometry measures light with wavelength weighted with respect to a standardised model of human brightness perception.
34.
In radiometry and colorimetry ( or color science more generally ), the spectral power distribution ( SPD ) of a light source is a measure of the power contributed by each frequency or color in a light source.
35.
However, the links will point to the corresponding photometry and radiometry tables in their corresponding articles " Photometry ( optics ) " and " Radiometry ", not to within the article, where the template has been included.
36.
However, the links will point to the corresponding photometry and radiometry tables in their corresponding articles " Photometry ( optics ) " and " Radiometry ", not to within the article, where the template has been included.
37.
Correspondingly, it may be detected by various other means, described by terms such as " photothermal radiometry ", " thermal lens " and " thermal beam deflection " ( popularly also known as " mirage " effect ) ( see Photothermal spectroscopy.
38.
"' Curtis Judson Humphreys "'( 17 February 1898 November 1986 ) was an American physicist born in Alliance, Ohio, USA . He was chief of the Radiometry Section of the U . S . Navy during the 1940s.
39.
In radiometry, "'radiant intensity "'is the radiant flux emitted, reflected, transmitted or received, per unit solid angle, and "'spectral intensity "'is the radiant intensity per unit frequency or wavelength, depending on whether the intensity " in branches of physics other than radiometry.
40.
In radiometry, "'radiant intensity "'is the radiant flux emitted, reflected, transmitted or received, per unit solid angle, and "'spectral intensity "'is the radiant intensity per unit frequency or wavelength, depending on whether the intensity " in branches of physics other than radiometry.
