• Apply the Inverse Square Law to determine the "extraterrestrial solar flux" at the Earth using the Sun's emitted fluxof 6.32x10⁷ W/m²(based on Wolfram Alpha).
• I am to use the attached equations from Brownson's SECS:

Mathematically, this process of light "dilution" can be represented by the following equation

l _ 3.1 6054113" t } To calculate the irradiance drop from a measured value to an unknown value at a known distance, we establish that the irradiance incident from the solar source is G, and note that the surface area of a sphere is calculated by 4 are. The average annual irradiance incident upon Earth (d215million ltmIII is called the solar constant {Gr}, evaluated as 1361 Win12 at the exterior of our atmosphere. The irradiance estimated at the Sun's photosphere is 6.33 x 107 Win11. The Inverse Square law dictates that we scale the irradiance from the surface of the Sun by a factor of ,or 2.155 x 10-5. The irradiance of any additional surface with respect to the Sun [like the average annual irradiance on another planet} is seen in Eq. [32}. By using a method of ratios shown in Eq. [3.2] the proportionality terms cancel out, leaving only the ratio of squared distances (if). 01 _ a? 02 3 (3.2)