The English term 'solar constant' means the rate at which radiant solar energy is received at the outer layer of the earth's atmosphere
the power per unit area received from the Sun at a distance of 1 AU.
Solar constant measures the quantity of solar radiation incident normally per minute on 1 cm2 surface of a perfectly black body on the Earth.
The quantity of solar radiation incident normally per minute on 1 cm2 surface of a perfectly black body on the Earth.
1cal/cm2/min