C

#### Chris.

##### Guest

Bear in mind that my initial calculations assumed a 5mm^2 dot size though.

Even more interestingly, treating the sun as a point source (quite accurate):

Sun's power at earths surface: ~ 1000W/m^2

Maximum distance from earth: ~ 152 million km

Radius of earth: ~ 6 378.1 km

Radius of our sun: ~695 500 km

Distance between the earth and the sun: 1.51(1.512986219)x10^11m

I = P/4pir^2, P = 1000(4pi(1.51x10^11)^2)

Power of the sun = 2.87x10^26W!!!

Supprising how accurate this is, the 'real value' is 3.6×10^26 W (Our model ignores atmospheric absorption)