IB Physics SL B.2.6 Mean solar intensity
IB Physics SL B.2.6 Mean solar intensity
Practise converting the solar constant into mean global intensity and using albedo and emissivity to calculate absorbed energy or surface temperature.
How this is tested
- explain the S/4 factor by comparing Earth's intercepting disc area with its total surface area
- calculate mean absorbed intensity with (1 - albedo)S/4 before using it in equilibrium temperature work
- apply the mean-intensity model to bodies like the Moon, substituting albedo and σ to find surface temperature