ESS11
Prof. Jin-Yi Yu
Distance From the Sun
q Solar Luminosity (L)
q     the constant flux of energy put out by the sun
q                         L = 3.9 x 1026   W
q Solar Flux Density (Sd)
q     the amount of solar energy per unit area on a sphere centered at the Sun with a distance d
q                         Sd  = L / (4 p d2)   W/m2
q    
q
d
sun