solar constant


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solar constant

n.
The average density of solar radiation measured outside Earth's atmosphere and at Earth's mean distance from the sun, equal to 0.140 watt per square centimeter.

solar constant

n
(Units) the rate at which the sun's energy is received per unit area at the top of the earth's atmosphere when the sun is at its mean distance from the earth and atmospheric absorption has been corrected for. Its value is 1367 watts per square metre

so′lar con′stant


n.
the average rate at which solar radiant energy is received by the earth: 1.94 small calories per minute per sq. cm.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.solar constant - the rate at which radiant solar energy is received at the outer layer of the earth's atmosphere
rate - a magnitude or frequency relative to a time unit; "they traveled at a rate of 55 miles per hour"; "the rate of change was faster than expected"
Translations
References in periodicals archive ?
The sun emits a constant stream of energy (the solar constant), surface activity of the Sun, associated with flares, mass ejections from the point of view of its global energy, negligible,a he added.
He tries to imagine the sun's death, that / bold period mark in black space --Rane Arroyo, "2nd Afterword: What is Here" from "Solar Constant" in The Sky's Weight
It considers a solar constant and dates in its calculations.
Variations in the solar constant: The solar constant depends on the Earth-Sun distance that varies over the year due to Earth's elliptical orbit around the sun.
where [I.sub.0] is the solar constant ([I.sub.0]= 1367W [m.sup.-2]), [E.sub.0] the eccentricity factor taking into account the variation of the earth-sun distance (dimensionless) [38]:
[I.sub.0] is the solar constant and is equal to 0.0082 MJ/[m.sup.2]/min.
For the determination of each weight ([p.sub.b]), it is necessary to estimate the solar constant ([K.sub.b], W [m.sup.-2] [micro][m.sup.-1]) associated with each one of the OLI reflective bands and, for this, the Eq.
Solar Constant 4000 is currently the only system on the market that is able to ensure even distribution of the radiation on the surface and allows changes in radiation intensity without affecting the spectral distribution.
where A is the area of flexible thin-film solar cell, [m.sup.2]; [I.sub.0] = 1367 w/[m.sup.2] is the solar constant; r is the reflectivity of flexible thin-film solar cell; a is the conversion efficiency of solar cell; mi is the mass of Layer I, kg; and q is the specific heat capacity of the material of Layer i, J/(kg x K).
Still, it inspired the astronomers to write, "As the solar constant increases with time, Earth's future is analogous to Venus's past." Other co-authors are Kevin J.
In addition, changes in the solar constant (luminosity) had also been observed using open solar magnetic field [25].