I find this very interesting as this equation looks very similar to the electric flux equation used in physics. E = flux / (A cos(theta)). The purpose of electric flux is to calculate the flow of electric field lines through a given surface, which is quite similar to the E here where we calculate irradiance.
I find this very interesting as this equation looks very similar to the electric flux equation used in physics. E = flux / (A cos(theta)). The purpose of electric flux is to calculate the flow of electric field lines through a given surface, which is quite similar to the E here where we calculate irradiance.