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Pronunciation varies by accent · noun
The rate of radiation transfer from a surface for each steradian of solid angle in a specified direction per unit area of cross section of the radiation perpendicular to that direction.
The geometry of the cone θ and the irradiance at the image of the carbon block were used to determine the absolute steradiancy of the energy in the cone θ as a radiometer calibration value.
Such sources usually attain brilliance by high current densities in small volumes. The total energy output may therefore be less than a greatly extended source of low steradiancy.
[…] steradiancies seen by the instrument during calibration were between 45 and 55 percent higher than the calculated average steradiancies […]
Use steradiancy when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Steradiancy means The rate of radiation transfer from a surface for each steradian of solid angle in a specified direction per unit area of cross section of the radiation perpendicular to that direction.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
The geometry of the cone θ and the irradiance at the image of the carbon block were used to determine the absolute steradiancy of the energy in the cone θ as a radiometer calibration value.
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