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This power is termed the solar constant and is approximately 1370 watts per square metre w m 2.
The solar constant is measured at. It is most accurately measured from satellites where atmospheric effects are absent. This changes dramatically however at the surface of the earth as sunlight has to pass through varying layers of. The solar constant includes all types of solar radiation and not just the visible light. For the best answers search on this site https shorturl im avxsf.
The solar constant is a measure of flux density is the amount of incoming solar electromagnetic radiation per unit area that would be incident on a plane perpendicular to the rays at a distance of one astronomical unit au roughly the mean distance from the sun to earth. The solar constant is always measured at one au or the average distance the earth is from the sun because the earth s orbit is not a perfect circle adjustments to the calculation need to be made. The formula for calculating the solar constant is written as so e sun x r sun r 2 where so is the solar constant e is the irradiance of the sun r is the radius of the sun and r is the distance between the earth and the sun which is the radius of the earth s orbit. Solar constant the total radiation energy received from the sun per unit of time per unit of area on a theoretical surface perpendicular to the sun s rays and at earth s mean distance from the sun.
The solar constant is a flux density measuring mean solar electromagnetic radiation per unit area. The solar constant is the amount of solar radiation incidence that is received at a distance of 1 astronomical unit au from the sun. The solar constant is not a physical constant in the modern codata scientific sense. It is presently calculated as being 1 366 w m2.
Now this solar constant is actually not a true constant. It is measured by satellite as being 1 361 kilowatts per square meter at solar minimum and approximately 0 1 greater at solar maximum. It is measured on a surface perpendicular to the rays one astronomical unit from the sun. The value of the constant is approximately 1 366 kilowatts per square metre.
The solar constant is currently estimated at 1367 w m2 cited from stine and harrigan 1986. The solar constant is used to calculate solar radiation.
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The solar constant is used to calculate solar radiation. The solar constant is currently estimated at 1367 w m2 cited from stine and harrigan 1986. The value of the constant is approximately 1 366 kilowatts per square metre.
