Question

what is solar constant??????? ​

Answer 1

solar constant I am not sure for this answer

Answer 2

The solar constant is defined as the quantity of solar energy (W/m²) at normal incidence outside the atmosphere(extraterrestrial) at the mean sun-earth distance. More specifically, this energy is defined as irradiance, the total amount of solar energy from the sun per unit time per unit area at Earth's distance from the Sun measured outside of Earth's atmosphere. This number turns out to be about 1.366 kilowatts per square meter. The spectral distribution is given in the figure. At shorter wavelengths you can see the Fraunhofer absorption lines.